Professional Paper No. 28 S

. · . { D, Petrography and Mineralogy, 27 m~ E, Chem1stry · · dPh · 41 an ys1cs, . 

DEPARTlHENT OF THE INTERIOR 

UNITED STATES GEOLOGICA;L SURVEY 

CHARLES D. WALCOTT, DIRECTOR 

THE 

SUPERIOR ANALYSES OF IGNEOUS ROCI\S 

FROM 

ROTH'S TABELLEN, 1869 TO 1884 

ARRANGED ACCORDING TO THE QUANTITATIVE SYSTEM OF CLASSIFICATION 

BY 

HENRY STEPHENS WASHINGTON 

\VA SHIN GTON 

GOVERN:MJcN'1' PUINTING Ol'l'ICE 

1904 

CONTENTS. 

Page. 

Letter of transmittal_ .• -- ___ ' ___ . ___ . __ .. _- .. -- .... _. _- _ ......... __ •. _________ .. -••. __ --- _ _ 5 

Introduction _____ . ___________ . ____ .... __ .. _____ . ___ . _ .. _ ...... ____________ . ________ . _____ . _ 7 

Basis for the seleetion of analyses ___________ .. ____________________ . _______ . ______ . __ . _ _ _ _ 7 

Grounds for the rejection of certain classes of analyses. ____________ . ____ . _____ ... _... 7 

Completeness of analyses. _____________ - __ • __________ ._. ____ .. ___ . _______ ._. ______ .. __ ._ 10 

Accuracy of analytical methods ____ . _______________ .. _____________ . _ . _ ........ __ . __ . _ _ 11 

Remarks on the tables __________ ---------- ___________ -.--. __ .______________________________ 13 

Designation of the sub rang. ___ .. ____________________ . ____________ . _______ : ______ . ___ .. ____ 13 

Quality of analyses at different periods·--------------------------------------------------- 15 

List of abbreviations ______ -.----- _______________ . ________________ ... _. _______ . ____ .________ 17 

References ___ . __________ . _. __ .. ____ . _______ . ___ . ___ . __________ . __ . ______________ . _ _ _ _ 17 

l\'Iinorals _________ . __ .. __________ . _ .. ___ . ___ . __________ . ~ _ . _________ .. ___ . __________ . _ 18 

Miscellaneous ____ . __ . _ ....... _____ .. ___ . ____________________________ . _________ .. ____ . 19 

Tables of analyses _ .... __________ ·_ .... __ . _______ ..... __ ... __________________________ .. _ _ _ _ 21 

Index to text. ___ - -.. _----. _ .. ____ -_----. _ ... - ___ . ___ .. _. _ ... ______ -- ____ --.- _. __ . __ . ___ ... 63 

Index to new rock name;; .. _ ..... __ . _ . ___ ; _____ .. _ .. ________ . __ • _______________ . _ .. _ .. __ . _ 64 

Index to old rock naines _____ -. _. ____ . _________ . _. _. _ .. ________ . _. ______ .. ___ . _. _ .. _ _ _ _ _ _ 65 

Index to localities ____ .. ____ . _ - __ , __ - _____ - ____________ . ___ . _____ . __ .. _________ .. _ .. _ _ _ _ _ _ 66 

Errata iri Professional Paper No. 14 ... _ __ _ _ __ _ _ _ _ __ _ _ _ __ _ _ _ _ _ _ _ _ _ __ __ _ _ ___ _ _ _ __ _ _ _ _ _ _ __ _ __ 67 

3 

LETTER OF TRANSMITTAL. 

DEPARTMENT OF THE lNTgRIOR, 

.. UNITED STATES GEoLoGICAL SuRVEY, 

1Vashington, D. C., 11farcli 5, 190fr. 

Sm: I have the honor to transmit to you a manuscript entitled ''Superior 

Analyses of Igneous Rocks from Roth's Tabellen, 1869 to 1884," by Henry 

Stephens ·washington, with the recommendation that it be published by the Survey 

as a Professional Paper. This compilation brings together all the quantitative 

analyses of igneous rocks made prior to 1884. that possess ·a sufficient degree of 

excellence to render them of value to the petrographer of the present day. The 

analyses of this collection are arranged according to the method used by the 

author in his tables of analyses published since the last editiqn of Roth's tables, 

issued by the Survey as Professional Paper No. 14. The two compilations thus 

bring into uniform shape for 1'eady reference all the "superior" analyses of 

igneous rocks published up to 1901. In view of the long recognized value to 

geologists and petrographers of t.he compilations by Justus Roth, it is clear that 

the tables prepared by Doctor Washington, embracing all the analyses of high 

grade and accompanied by critical discussion, must be of still greater benefit to 

all students of igneous rocks. 

Very i·espectfully, 

Dr. c. vV. HAYES, 

Geolog£st in OAarge of Geology. 

WHITMAN CROSS, 

Geologist in Olwrge, Section_ of Petrology, 

5 

THE SUPERIOR ANALYSES OF IGNEOUS ROCKS 

FROM ROTH'S TABELLEN,,l869 TO 1884:. 

By HENRY s. WASHINGTON. 

INTRODUCTION. 

In Professional Paper No. 14a there were collected the chemical analyses of 

igneol;ls rocks published from 1884 to 190D, inclusive, arranged according to the 

quantitative system of classification recently proposed by Crosfl, Iddings, Pirsson, 

and 'Vashington b. In order to supplement this work it has appeared advisable 

to select the more reliable and complete of the earlier analyses collected by ,Justus 

Roth 0 and arrange them also in the same manner for publication. Petrographers 

would thus have available for i1se according to· the new system almost the entire 

body of chemical 'vork of real value on igneous rocks, the exceptions being a few 

analyses publiHhed prior to 1900 which may have been o.verlooked by both Roth 

and myself. . The two coliections would form a foundation as broad as possible 

for future research and discussion. 

I must express my sense of obligation to the United States Geological Survey 

for publishing the present collection of analyses, and my thariks to my colleagues 

in the new system of elassification for their friendly advice and assistance. 

BASIS FOR 'l'HE SELECTION OF ANALYSES. 

GROUNDS FOR THE RE.JECTION OF CEHTAIN CLASSES 01<' ANALYSES. 

In view of the time at ~hich the majority of the analyses collected by Roth 

were made it i:,: of course natural that a very large proportion of them do not 

come up to modern standards and mnst be rejected as unfit for use in the 

quantitative classification of rocks. A critical examin~tion shows, in fact, that, 

a\Vashington, II. S., Chemical analyses of igneous rocks published from 1884 to 1900: Prof. Paper U. S. Geol. 

Survey No. 14, 1903. This will be referred to by the abbreviation W. 'f. · 

bQuantit:ative Classification of Igneous Rocks, Chicago, 1903. 

c Rot!;, Justus, Die Gesteins·Analysen, Berlin, 1861. Roth, Justus, Beitriige zur Petrographic der plutonischen 

Gesteine: Abhandl. Kon. Akr.d. Wiss. Berlin, 1869, 1873, 1879, and 1884. These will be referred to as Roth's 'fabellen 

(R. 'f.), with the appropriate date. 

7 
8 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

adopting the criteria used in the earlier tables," the proportion -of "superior" 

. analyses is in reality exceedingly small. The numerical data will be discussed 

on a subsequent page. 

The criteria according t<? which the "rat.lngs" or indication of the relative 

value of th~ analyses have been assigned by me may be summarized from Professional Paper No. 14 (pp. 39-41). 

The general idea is that followed by Dun and Bradstreet in assigning credit 

ratings to commercial· houses. The factors on which the value of an analysis 

depends are two-it,s accuracy and its completeness-and, within restricted limits, 

each of these compensates for the other to a certain extent. The degree of 

accuracy is expressed by the letters A, B, C, D, and the degree of completeness by 

the figures 1, 2, 3, 4, in combinations of a letter and a figure, the former preceding. 

A is used when the analysis gives evidence of a high degree of accuracythat is, when it corresponds well with the mode (actual mineral composition), and 

iVhen the summation is between the limits 99.50 and 100.75; B is assigned when 

the analysis and the mode correspond, and when the summation is between 99.50 

and 99.00, or between 100.75 and 101.25. C applies when the analysis corresponds fairly well with the mode, or when the sum is between 99.00 and 98.50 

or between 101.25 and 101.75. D is to be used when the analysis varies decidedly 

from the mode in any important particular, or when the sum is below 98.50 or 

above 101.75. 

1 is assigned when the analysis is perfectly complete or ~early so, as when,· 

in addition to all the main constituents and those of secondary importance, there 

arc determined Zr02 , Cr20 3 , NiO, BaO, and the like, or several of these. The 

iron oxides should be separately determined in all cases to have this figure apply. 

2 will be used when all the main constituents, including both oxides of iron, have 

been deter!nined, as well as the constituents of secondary importance, including 

especiallY_. Ti02 and P2 0 5, but when the minor constituents, as Zr02 , et~., have 

not been determined. 2 will also be applied to the analysis of salic rocks in 

which the iron oxides arc present in small amount, but have not been separated, 

and which are otherwise so complete as to fall under 1. 3 applies to analyses 

in which the main constituents, including both oxMles of iron, have been determined, but not Ti(\, P 20 5, Cl, etc. (or the minor constituents), unless minerals 

rich in these are so abundant as to make their estimation of the same importance as that of the main constituents. 3 also includes analyses of rocks which 

are very low in iron oxides when these have not been separated, but. which are 

otherwise complete according to the requirements of 2. 4 is assigned when, with 

the exceptions noted above, the iron oxides have not been separated, when the 

a Washington, H. 8., Prof. Paper U.S. GeoL Survey No. 14, p. 28. 
0 

• 

BASIS FOR SELECTION OF ANALYSES. 9 

alkalies or other constituents are determl.ned by difference from 100 per cent, 

when the alkalies have not been separated, or when any constituent of the first 

importance bas not been determined, etc. . 

To express the various ratings of equal value the following terms are employed: 

Excellent or first rate, g·ood or second rate, fair ·or third rate, poor or fourth 

rate, and bad or fifth rate. Their meanings, in terms of the symbols chosen; 

are seen in the subjoined table, ratings of the same value falling on the .same 

horizontal line: 

Scheme for rating rock analyses. 

First rate ..... _ .. _____ . _____ . _____ . __ . _. Al _. ___ . _ .\ .. _ . _. __ . ____ . _ . 

Second rate .... ---··----··--·----------- A2 Bl -------· ·--·-·--

Third rate . __ . __ .. ___ .. ___ .. _ . _ . _ . ___ • _ _ A3 B2 Cl 

Exceilent. _) . 

Go_od ... _ .. Superior. 

Fa1r ...... . 

Fourthrate .. ------------·-------------- A4 B3 02 Dl 

>1!thmte - --- -- - -- l ::·- E4: ! ~ ~~ 

Poor . _ . ___ ) 

)Bad _ _ _ _ _ _ _ {n{mio.. 

----------------------------~-------------' ----------~----------------

. The general lines along which the selection of analyses for the present work 

was made were those laid down in Professional Paper No. 14 for the classification of the table~ into two parts, one containing the "superior" anal:pes, and the 

other containing the "inferior" ones. With few exceptions there are to be found 

in the present colle~tion only those analyses which logically fall in the first class. 

In the first place, all the analyses found in Roth's Tabellen of 1861 were 

rejected. By far the greater number of these are "inferior" in any case, as, 

apart from bad summ&ttions and other obvious inaccuracies, only about two 

dozen show separate determinations of the iron oxides. Furthermore, regard 

being had to their very early date and the uncertain methods of chemical 

analysis obtaining at that period, even what are apparently the best of them 

must be considered as merely more or less rough· approximations, chiefly of historical interest, and of -little or no use in present-day investig~tions. On taking 

up Roth's collections, publishe(l respectively in 1860, 1873, 1879, and 1884, all 

analyses of crystalline schists and other metamorphic rocks were excluded. The 

many analyses of avowedly or evidently decomposed igneous rocks were also 

'rejected. ·Partial analyses, those of groundmass, or those of rocks from which it 

is tstated that some of the mineral constituents (as magnetite) had been removed 

prior to analysis, as well as those of portions soluble and insoluble in HCI, 

were also passed over. In a number of cases, however, when otherwise deemed 

to be of superior quality, analyses representing the bulk composition of rocks, 

calculated from· the analyses of the soluble and insoluble portions, were admitted, 

0 

.. 

0 
0 

10 SUPERIOR ANALYSES OF IGNEOUS ROOKS. 

though such can not be held to have the weight of a complete rock analysis, made 

direetly. 

A few of the analyses appear}ng in Roth's Tabellen of 1884 were also published 

in I>rofessional Paper No. 14. These have been included in the pi·esent work, with 

a remark to the effect that tJey arc also to be found in the other paper. 

Although it has been impossible to examine thoroughly the vast mass of 

literature published prior to 1884, yet several analyses have been found which 

are not given by Roth. All of those so found are, however, of inferior quality, 

either because the iron oxides were not separately determined or for other reasons, 

so that in fact no. analysis published prior to 1884 and not collected by Roth is 

present in this work. 

COMPU~TENESS OJ<' ANALYSES. 

T\uning from the analyses excluded on the general grounds noted above, we 

come to those rejected on account of the incompleteness or the inaccuracy of the 

analysis. By far the most numerous of this group are those in which the iron 

oxides have not been determined separately. As has been already explained,a if 

the sum of iron oxides exceeds 1 or 2 per cent and they arc not separately 

determined, it is impossible to use an analysis in the calculation of either the 

norm (and hence in the determination of the classificatory position of the rock) 

or the mode or actual mineral composition, unless totally arbiti·ary assumptions 

are made which may or may not be in accordance with fact. A calculation 

involving such assumptions will have little or no value. This ground for exclusion is, of course, most seriously felt in the more fernie (basic) rocks, since 

among those which are obviously of the persalane class, especially in the quaric 

orders, the amount of iron oxides is usually so small as to render practically 

negligible the error due to their nonseparation and the assumption in the calculation that they are present as FeO. A considerable number of these last will be 

found in the following pages. Such analyses were similarly treated in Professional Paper No. 14. 

Roth's Tabellen also .contain some analyses in which K2 0, Na20, MgO, or CaO 

are not determined, as well as a few in which the alumina and iron oxides are not 

separated. These, of course, are.omitted. 

Analyses are numerous, in fact they constitute the great majority of those in 

question, in which Ti02 or P20 5 , or both, have not been determined. This affects 

the apparent amount of alumina, rendering it too high, and among the more 

fernie rocks, especially those of the salfemane class, this defect is apt to lead to . 

serious error in the assigned classificatory position of the rock. All such 

a Washington, H. S., Prof. Paper U.S. Gcol. Survey No. 14, p. 43. 

• 
BASIS FOR SELECTION OF ANALYSEtl. 11 

analyses, however, if complete as to the main constituents, have been admitted 

to the present work, and rated 3 as regards completeness, according to the lines 

previously laid down. It must be repeateda here that the assigned classificatory 

positions of rocks represented by sueh inco~plete ,analyses are to be regarded 

in general as provisional, and subject to change when complete analyses are 

available. 

In this connection attention may be called to the fact that for the proper 

calculation of the minor divisions, grad, subgrad, and their sections, 1n Classes II 

and HI, of the Quantitative system; the determination of Ti02 and Pp5, is absolutely 

necessary. This arises from the following facts: The P 20 5 determines the amount 

of apatite, and hence the ratio P, ~ M, and also giycs the correct amount of CaO" 

which enters normative diopside or wollastonite and which affects the amount of 

MgO and FeO for normative hypersthene and olivine. The Ti02 indicates the 

amount of ilmenite, and hence its determination is essential for a correct statement 

of the ratio p i.?• which determines the grad, and also affects the amount of FeO 

available for diopside, hypersthene, and olivine. 

It is true that these substances are present usually in comparatively small 

amounts, most frequently in quantities less than 1 per cent. But as the minor 

divisions, grad, subgrad, and their sections in the classes named, are based on 

the mineralogical and chemical characters of the ~:~ubordinate normative minerals, 

small amounts will assume here an importance which they do not usually have 

when dealing with the major division::;, order, rang, and· subrang. 

It will also be evident that, in dealing with Classes IV and V, the determination of these constituents is necessary for the proper computation of the major 

divisions, order, rang, and subrang. 

ACCURACY OF ANALYTICAL METHODS. 

Turning to the other factor involved in the quality of an analysis, its accuracy, 

·we are confronted with the fact in .this case that at the time the great majority of the 

analyses found in Roth's Tabellen were made the methods and means of a~alysis 

were inferior to those of the present day. New methods have been devised to 

eliminate serious constant errors discovered in many of the older methods, and these 

have been modified or new ones adopted which do not involve such errors, while 

apparatus has been improved and chemicals have been purified, all these changed 

conditions leading to greater accuracy and expedition in carrying out the processes 

involvea. This general aspect of all the older work is of such serious importance 

that the exacting petrographer who demands data of a high degree of excellence 

"Washington, H. 8., Prof. Paper U. 8. GeoL Survey No. 14, p. 45. 
12 SUPERIOR ANALYSES OF IGNEOUS ROOKS. 

as a basis £or any theoretical discussion must perforce regard with suspicion nearly 

all of the analyses collected by Roth, and must prefer to use in their stead analyses 

of more modern date and correspondingly greater degree. of accuracy. It is true 

that there are some excellent analy~es among these older ones, especially those 

made by Rammelsberg, whose early work, in ~:>pite of the disadvantages of the time 

· as to both methods and means, is of a character which compares favorably with 

much of that of the present day. Conversely, it by no means follows that because 

an analysis iA modern it is consequently of a high degree of excellence, a~:> an 

examination of Professional Paper No. 14 will show. But, speaking generally, it 

is clear that the great bulk of the analyses in Roth's Tabellen can not be regarded 

as attaining a high standard of accuracy, just as they fall short of modern work 

in regard to completeness. 

Admitting this aspect of affairs, we are met with certain difficulties in rating 

the analyses of Roth's Tabellen as to their accuracy. As has been explained 

elsewhere," the surest method of determining this factor is a comparison of the 

mode of the rock with the norm deduced from the analysis. · If some indication 

were given in connection with the analysis as to the quantitative relations of the 

mineralogical composition in any given rock, it would be a comparatively simple 

matter to arrive at a general idea, at least, of the accuracy of the analysis. But 

in most cases we are left quite in the dark o~ this important point, more especially where such early work as most of that represented by Roth's analyses is 

concerned, for at the time mahy of them were made little or no microscopical 

work on rock sections was possible or was done. 

Even in such analyses, however, calculation of the norm proves to be of the 

greatest use in estimating their value. Some experience and study of the relations of norm and mode enable one to form a fairly trustworthy estimate of the 

value of analyses as regards their accuracy, and although such a judgment is admittedly not to be considered final or absolute, yet the results of its application 

must be regarded as more valuable than a blind acc.eptance of the figures reported 

by the analyst on the tacit assumption of their infallibility. 

I have calculated the norm in all cases where the analy~is was sufficiently 

complete to permit this to be done sati~:>factorily, and have used it as a basis 

for passing judgment on its accuracy. This process has t·esulted in the rejection of a number of analyses which might strike one superficially as fairly good. 

But again, cases are met with in which even the calculation of the norm is 

of no great assistance. While the analyses may differ in certain respects from 

more modern analyses of rocks from the same locality, yet the norms arc quite 

consistent with what is known of the mode. Jn such cases, although. the presumption is against the accuracy of such eady work, yet if other features do 

a Washington, H. S., Prof. Paper No. 14, p. 30. 
DETAILS OF THE TABLES. 13 

not indicate any marked degree of inaccuracy, .these analyses have been rated A 

in this respect, although I must confess to considerable private mental reservations 

as to the applicability of this rating in many cases. · 

REl\:lARKS ON TilE 'l'ABT,ES. 

In general, the tables here p~esented are arranged along the· lines laid down in 

Professional Paper No. 14. The classification is carried as far as subrang, the 

analyses in each subrang being numbe;ed consecutively in geogtaphical sequence, 

and of rocks from the same locality according to decreasing Si02 • The rating 

assigned by me is given in the left-hand column below the number of the analysis. 

No verification of the analytical figures furnished by Roth has been attempted, 

and they are given as they appear in his Tabellen. In one or two cases there is 

some error leading to a summation not in accord with the figures of the analysis. 

In such cases the correct summation of the figures as published is given above, with 

'that of Roth below in parenthesis. There are no columns provided for H20- and 

for BaO, as scarcely any of ~he analyses in Roth's Tabellen show these constituents; 

The name of the analyst is as stated by Roth. In some ·cases he furnishes 

this information definitely by the use of the name in parenthesis below that of the 

author, while in othe\S he leaves it uncertain as to whether the author of the paper 

made the analysis or not. In such cases the point has not been examined further. 

In the reference column is given the name of the author, followed by the 

original reference as stated by Roth, and the reference to Roth's Tabelle~, cited 

by year of publication and page. As far as my examination extends, the page 

in the original reference is that on which the analysis is to be found, but no 

attempt has been made to verify Roth's references, although, of course, great 

care has been taken to insure that they have been copied correctly. The abbreviations are the same as those used in Professional Paper No. 14. 

The nam~ of the rock is that given by Roth, unl~ss he states that the author's 

name differs from his, in which case that of the author is placed above with that 

adopted by Roth in parenthesis below. 

Reference to Roth's Tabellen. is indicated by R T., and to the collection 

published in Professional Paper No. 14 by W. T. The present' set of tables may 

be conveniently designated by \V. R. T. 

DESIGNATION OF THE SUBRANG. 

It has been the experience of the authors of the quantitative classification that 

it is frequently found useful to be able to state the classificatory position of a rock 

. magma without using the subrang name. This may be because the. subrang in 

question has not yet been named, because it is desired to indicate. certain affinities 

of the rock, or for other reasons. We h~vc adopted in such cases a method 

which was evolved in our correspondence and which has already been published 
14 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

by Iddings m a recent work." This method, elaborated beyond the form used by 

Iddings, may conveniently be described here, for the benefit of those petrographers 

who may desire to use the proposed classification. 

It consists of stating numerically the several hierarchical divisions in which 

the magma falls. Thus the name monzonose may be replaced by the symbol 

II.5.2.3. Here II indicates that the magma falls in Class II (dosalane), 5 that 

the order is the fifth (per.felic), 2 that the rang is the second (domalkalic), and 3 

that the subrang is the third (sodipotassic). 

In the case of a threefold division, as that of a docalcic rang into three subrangs, a prepotassic, a sodipotassic, and a presodic, we have heretofore designated 

these. as the first, second, and third, or as 1, 2, and 3, respectively. b We find in 

practice, however, that this procedure is liable to give rise to serious misunderstanding, since, for example, in one case a 3 which occupies the suhrang position 

in the symbol will mean that the sub rang is sodipotassic, and in another that it 

is presodic, great attention being necessary to keep clear in mind whether the 

rang is subject to a fivefold or to a threefold division. 

We have therefore somewhat modified our original plan, and, keeping to the 

use of five numbers throughout, c propose to indicate the threefold character of a 

subdivision ·by combining the numerals of the first a!ld seco'Ild and of the fourth 

and fifth divisions, :1s is done in the classification, placing a eomma between them. 

Thus the presodic suhrang anvergnose of the docalcic rang auvergnase will be 

indicated by the symbol Ill.5.4.4,5. This may be expressed in words by using 

the phrase "fourth-fifth subrang." It is not necessary to explain that the numbers 

referring to orders will be those from 1 to 9. 

Sections of any of the divisions may be indicated by the appropriate figures 

placed exponentially. Thus the subrang uvaldose will have the symbol IV.23.1 2.2. 

Subclasses and suborders, ,\rhich will he used seldom, may be expressed by the use 

of the appropriate nume~·al inclosed in parentheses. Thus the symbol of kyschtymase would be I(31

).5.5.0., there being no snbrang needed, as the rang is percalcic. 

Grads and suhgrads, with their sections, may be expressed in an exactly similar 

way, their indicative numerals following those of the major divisions, and being 

rrintcd in ital-ics for greater distinctiveness. Thus the full magmatic symbol of 

the typical monzonite of Monzoni (monzonote)d would be Il.5.2.3.1,~.1,~ ·g. 

uiddings, J.P., Prof. Paper U.S. Geol. Survey No. 18, 1903, pp. 67 and 72. 

b Cross, Iddings, Pirsson, Washington, op. cit., pp. 122, 137. 

cAn apparent exception is that of the orders in Classes I, II, and. III, which number nine. The exception is apparent 

only, as the orders are really arranged in a series of two fivefold groups, joined by the fifth (perfellc) order, which is 

·common to both. Cf. C. I. P. W., op. cit., p. 131. 

dAs has been pointed out by Milch (Centralblatt fiir l\lincralogie, 1903, p.691), there was a slight confusion in otir 

statement of the position of this rock (C. I. P. W., op. cit., p. 176), owing to the substitution pf a fivefold for a threefold 

division. The grad was given as the second, while it should be the first-second, and simil&rly with the subgrnd. In 

the above symbol J have inserted the exponential figure for the section of subgrad, expressing the relation of 

(l\lg,Fe)O:CaO", although strictly speaking it is not needed. · 

' 
QUALITY OF ANALYSES. 15 

In the ease of a transition rock, the numeral of the division near the border 

of which it falls may be written before the one expressing its exact position (to 

correspond with the nomenclature),a and connected with ·it by tt hyphen. If th~ 

rock is transitional in several respects, the numeral of each of such divisions 

will have it~ appropriate hyphenated preeeding numeral. Thus the magma of 

the leucitite of Capo di Bovc, which is a vcsuvose-albanose,b may be expressed 

by lii-11.6.2.2, and that of the porphyrite of the Suldenferner," which is an 

andose, but near the borders of harzose, tonalose, and shoshonose, may be written 

as 11.4-5.4-3.4. 

QUALITY OF ANALYSES AT DIFFEREN'.r PERIODS. 

It has already been remarked that the proportion of analyses of superior 

quality to be fou~d in Roth's Tabellen is remarkably small. It may be· of 

interest to . examine this matter somewhat more in detail, especially as such 

an examination brings out very clearly the steady improvement in analytical 

work ·whiGh has been in progress since the first tables were compiled by Roth. 

In the table below is given the number of analyses to qe found in the various 

issues of Roth's Tabellen, omitting those of metamorphic rocks, of groundmass, 

and of portions soluble and insoluble in HCI. The number which has been 

admitted to the present work is also given· in each case, as well as the percentage 

·which each represents. For comparative purposes "there are given below the corresponding figures for the analyses published from 18~4 to 1900, taken from my 

previous work. 

Number of analyses publ·ished in Roth'.~ Tabellen, with numbe.r and percentage of superior analyses republuhed 

from that and other sources in Professional Papers Nos. 14 and 28. 

~~~---- ------~~----,----~-..,------,.----~ 

Total num- Number of Per cent of 

berof superior superior 

nnalyses. analyse~ in analyses in 

W.R.T. W.R.'f. 

R. T. 18til. . . . .. . .. . . . ................... . 616 0 0 

. R. T. 1869 ................................ . 744 67 \!.01 

R. T.1873 ............................. :.-. 232 24 10.38 

R. T. 1879 ...... , ............... -- .... -- .. - -I 422 69 16.35 

R. T. 1884 ......................... · ....... . 408 88 21.57 

2,422 248. 10.24 

\V. T. 1900 ............................... . 2,881 1, 864 64.70 

5,303 ,2, 112 39.83 

aCf. C. I. P. W., op. cit., pp. 166, 175. bW. T., p. 202. ow. R. T., No.ll, andose, p. 4n. 
16 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

Of the above table it must be said in the beginning that the figures for Roth's 

Tabellen and for Washington's Tables are not quite strictly commensurate. The 

,figures in the second column represent, as far as Roth's Tabellen arc concerned, 

only the analyses which have been admitted to the present work, and thus those 

of tuffs and of decomposed rocks are excluded, ·while in the figures for my 

tables such analyses are counted. if of superior quality. Consequently the figures 

giving the percentages of superior analyses for Roth's Tabellcn will be somewhat 

too low. This, however, is counterbalanced by the fact that a considerable 

number of analyses of qmtric persalane rocks, in which the iron oxides have 

not been separated and which are consequently fourth rate, have been included 

in the figures given above for Hoth, while all such have been omitted from the 

total showing the superior analyses published since 1884. As the table is of no 

great, importance, and is intended only to show the general condition of affairs, 

it has not been thought worth while to adjust these discrepancies. 

Perhaps the most obvious fact brought out by the figures above is the very 

poor, not to say bad, qu~lity of the earlier work, as compared with that of to-day. 

The average of superior analyses represented by R. T., 1861 to 1884, is only 10.24, 

while for the seventeen years from 1884 to 1900 it is 64.70. 

This great difference is due, as the table testifies most eloquently, to the steady 

improvement in the quality of analytical work from the beginning. The figures 

expressing the percentages of superior analyses rise steadily from 1861 to 1884' 

each being successively higher than the one preceding it. The great improvement 

shown between 1861 and !869 is very largely due to the fact that the iron oxides 

were more often separately determined. After 1884 the improvement is still more 

rapid, the table showing an average of 64.70 of superior analyses between 1884 

and 1900. This is very largely owing to the establishment of the- laboratory of 

the United States Geological Survey in 1880 and its copious output, especially in 

late years, of rock analyses of the highest quality. Even this last ratio shows 

a percentage of which neither petrographers nor analytical chemists need be 

proud, but it is at any rate evidence of a decided change for the better, and, with 

the increasing emphasis which is being laid on this side of petrography, gives 

promise of an increasingly brighter future. 

Hillebrand, Geikie,a and others have called attention to this contrast,, but, it 

would be well if twery petrographer would consider the data for himself in order 

that he might fully realize the unsatisfactory character of the great body of 

analyses on which so much theoretical discussion has been based. He would 

then surely cast his influence for a higher grade of analytical work. 

---·--- aGeikie, Sir Archibttld, Text-book of Geology, Vol. I, 1903, p. 116. 
ABBREVIATIONS. 17 

As to the absolute number of analyses, the table shows that there has been 

a steady increase, as was to have been expected. In about twenty years prior to 

1861 there were made 616 analyses, or on an average about 30 analyses a year. 

During the twenty-th.ree years from 1861 to 1884, 1,806 analyses were made, an 

annual average of 18.5, while in the seventeen years :from Hi84 to 1900 the much 

larger number of 2,881 analyses were made, or 169.4 a year. 

LIST OF ABBREVIATIONS. 

In the case of words etymologically alike, but in different languages, only the 

English :form is given. The other abbreviations used will be self-explanatory. 

REFERENCES. 

A .............. American. 

Abh ........... Abhandlung. 

Ac ............. Academy, etc. 

A. J. S .......... American Journal of Science (New Haven). 

Ak ............. Akaclemie. 

Arch.· .......... Archive. 

Att ............. Atti. 

B .............. Bulletin, etc. 

B. B ........ _ .... Beilage Band. 

Ber ............ Berichte. 

Btr ............ Beitriiga. 

C. I. P. W ....... Cross, Iddings, Pirsson, Washington. 

D .............. Deutsch. 

Ds ............. Denkschrift. 

Erdk ........... Erdkunde. 

Erl.. ............ Erliiuterung. 

Finl. ........ · ... Finland. 

Fr ............. France, Freund e. ' 

G .............. Geology, etc. 

Geog ........... Geognosie. 

Ges ............ Gesellschaft. 

Gest. ........... Gesteine. 

G. S ............ Geological Survey. 

In. diss ......... Inaugural dissertation. 

Ir .............. Irish. 

It .............. Italian. 

J ............... Journal. 

Jb ............. J ahresbericht. 

K .. : ........... Kaiscrlich. 

L-A ............ Landes-Anstalt. 

Mem ........... Memoir,· etc. 

N .............. New, etc. 

Nat ............ Nature, etc. 

Nf ............. Naturforscher. 

Nh ............. Natural history. 

N.J ............ Neues Jahrbuch flir Mineralogic, Geologie, und Palaontologie (Stuttgart). 

N.J. B. B ...... NeuesJahrbuch, Beilage Band (Stuttgart). 

Nk ............. Naturkunde. 

· 6623-No. 28-04-2 
18 SUPERIOR .ANALYSES OF IGNEOUS ROCKS. 

No .......•••.•. Number. 

Pr ...... __ ....•. Proceedings, etc. Also Preussen. 

Q .............. Quarterly. 

Q. J. G. S ... , ... Quarterly Journal of the Geological Society of London. 

R .......... _ .•. Royal. 

R-A ............ Reichs-Anstalt. 

Rev ......•.•... Review, etc. 

R. T ............ Roth's Tabellen. 

Sb ............. Sitzungsberichte. 

Soc ............. Society, etc. 

Sv ............. Sverige. 

T . _ . _ . _ .... _ . _ . Transactions. 

T. M.P. M ...... Tscherrnak's Mineralogische und Petrographische Mittheilungen (Wien). 

Und ...... _. _. _. Undersokning, Undersogelse. 

U. S ............ United States. 

U. S. G. S ... _ ... Unit~ States Geological Survey. 

V er . _ .. _ . _ . __ .. V ere in. 

Vh _ .. __ ...... _. Verhandlungen. 

Wiss ... _ ... _ .. _ Wissenschaft. 

W. R. T ...•.... Roth's Tabellen, arranged by Washington. Prof. Paper No. 28. 

W. T ........... Washington's Tables, 1884--1900. Prof. Paper No. 14. 

Z _. _ ........... Zeitschrift. 

z. D. G. G ...... Zeitschrift der Deutsche Geologische Gesellschaft (Berlin). 

Z. K. _ •..... __ .Zeitschrift fiir Krystallographie (Miinchen). 

MINERALS.· 

A . __ ..• _ ... __ .. Apatite subgroup (apatite, fluorite, calcite, pyrite, iron, etc.). 

ab ... __ ._ ... _ .. albite. · 

ac ...•. _ ....•... acmitc. 

am . _ •... _ ..... _ ackermanite. 

an . _. _ .. ___ .... anorthite. 

ap ---···-------apatite. 

C _. __ .... __ .... corundum. 

cc .... __ ._ ... _ .. calcite ' 

em ... ____ ._._ .. chromite. _ 

di _ .. _ .......... diopside. 

F .............. Feldspar subgroup (orthoclase, albite, anorthite). 

fr" .. __ . _ ... _._ .. fluorite. 

H _____ ...... _ .. Hemic subgroup (magnetite, chromite, hematite). 

hm . _. _._ ...... hematite. 

hy _ . _ ......•. _.hypersthene.· 

il . _ ... _. _ .•.... ilmenite. 

ir ........ _ ...•. iron (metallic). 

kp _. _. __ ~. ____ . kaliophilite. 

ks _. _ •. _ ....... potassium metasilicate. 

L . _ ...... _ ... _. Lenad subgroup (leucite, nephelite, sodalite, noselite ). 

lc ..•.. ___ .. _. _ .leucite. 

M. _. _ ... _. _ .... Mitic subgroup (magnetite, chromite, hematite, ilruenite, titanite, perofskite, rutile). 

rot ... __ ._ .•. _ .. magnetite. 

ne _ .. _ ......... nephelite. 

no .•. _ ......•.. noselite. 

ns ........•... _.sodium metasilica1e. 

0 .............. Olivine subgroup (olivine, ackermanite ). 
ABBREVIATIONS. 19 

ol ....•......... olivine. 

or. ............. orthoclase. 

org ............. organic matter. 

P .............. Pyroxene subgroup ( acmite, sodium metasilicate, potassium metasilicate, , diopside, 

wollastonite, hypersthene). 

pf .............. perofskite. 

pr .............. pyrite. 

Q .............. quartz. 

ru .............. rutile. 

so .............. sodalite. 

1' .............. Tilic subgroup (ilmenite, titanite, perofskite, rutile). 

tn .............. titanite, 

wo ............. wollastonite. 

X .... ; ......... rare earths, not identified, insoluble in melted KH (804 ). 

Z ......••••.... zircon. 

MISCELLANEOUS. 

cor ............. corrected. 

E .............. east. 

M .............. miles. 

N .. · ............ north. 

n .............. near. 

n. d ............ not determined. 

p _ ............. page. 

priv. contrib .... private contribution (unpublished.) 

R .............. rang. 

Ref ............ reference. 

8 .............. south. 

sp. gr ..... : . .... specific gravity. 

SR ............. subrang. 

tr .............. trace. 

W ............. west. 

i 

ANALYSES. 

21 

. ' 
22 SUPERIOR ANALYSES OF IGNEC~B ROCKS. 

CLASS I. PERSALANE. 

RANG 1. PERALKALW. ALASKASE. 

No. Si02 Al20 3 Fe20 3 FeO MgO CaO Na20 K20 H 20 co. Ti02 

I~ MnO Sum Sp.gr. 

-- 1 76.00 8. 72 5.33 0. 15 0.11 0. 79 0.88 7.82 0.40 0.20 100.40 2.588 

B3. IV 1.267 .085 .033 .002 .003 .014 .015 .083 

RANG 1. PERALKALIC. ALASKASE. 

1 78.40 11.32 0.92 n. d. 0.48 0.45 3.09 4.83 0.56 100.05 

A4. IV 1.307 .111 .000 (.012) .012 .008 .050 .051 

2 74.88 12.00 3.50 0.20 1. 28 0.34 2.49 4. 77· 1. 20 100.66 

A3. III 1. 248 .118 .022 .003 .032 .006 .040 .051 

3 77.67 11.47 1.40 0.16 0. 16 0.35 3.42 4. 76 1.02 100.41 2.600 

AS. III 1.295 .112 .009 .002 .004 .006 .055 .051 

4 76.68 ·12.90 1. 02 0.45 0.40 0.69 3.43 4.67 0.72 100.96 2.587 

A3. III 1,278 .126 .006 .006 .010 .013 .055 .050 

5 77.68 12.95 0.96 0.37 0.21 0.30 3.18 4.37 0.71 trace 100.73 2.615 

AS. III 1.295 .127 .006 .005 .005 . 005 .051 .047 - 13° 

6 76,12 13.42 1. 28 n.d. 0.19 0.34 3.10 4.89 1. 06 100.40 

A4. IV 1.269 .131 .008 (.016) .005 .006 .050 .052 

7 75.31 13.23 1. 50 n.d. 0.25 0.65 2.60 5.51 0.86 99.91 

A4. IV 1.255 .130 .009 (.018) .006 .012 .042 .059 

RANG 1. PERALKALIC. ALASKASE. 

1 82.80 7.94 n.d. 1. 05 tmce 0 .. 35 3.05 1. 85 3.94 100.98 2.363 

B3. IV 1.380 .078 - .015 - . 006 .050 .020 20° 

RANG 1. PERALKALIC. ALASKASE. 

1 80.42 9.22 1. 22 0.62 0.34 O.S6 4.50 0.62 0.66 0.98 0.06 0.06 99.67 2.652 

A2. n l. 340 .090 .007 .008 .009 .015 . 072 .006 .001 -

RANG 2. DOMALKALIC. ALSBACHASE. 

1 74.21 12.51 0.78 2.94 0.20 1. 82 0.54 6.67 0.50 100.17 2. 702 

As. m 1. 237 .122 ,005 .041 .005 .032 .009 .071 

RANG 2. DOMALKALIC. ALSRACHASE. 

1 72.30 15.04 0.64 1. 28 0.59 1. 59 1. 02 4.95 2.18 0.11 0.19 100.02 2.697 

A2. II 1.205 .147 .004 .018 .01b .029 .016 .053 .001 .001 
PERSALANE-MIHALOSE. 23 

ORDER 3. QUARFELIC. COLUMBARE. 

SUBRANG 1. PERPOTASSIC. 

Inclusive. Norm. Loeality. Analyst. Referenee. Author's name. Remarks. 

~-----

Q 43.6 ns 1.6 Fork Hill, County· S. Haughton. S. Haughton, Felsite-por- Iron oxides? or 46.2 di 0.7 Armagh, Ireland. J. G. Soe. Dubl. IX, phyry. Alkalies? ab 1.1 wo 1.3 mt1.5 p. 334, 1862. hm5.0 R. T. 1869, p. LII. 

SUBRANG 3. SODIPOTASSIC. ALASKOSE. 

Q 39. i by 2.8 Carrickburn, County S. Ha';ghton. S. Haughton, Felsite. or 28.4 Wexford, Ireland. Tr. R. Ir. Ae. XXIII, ab26.2 

an 2.2 p. 615, 1859. c 0.2 R. T. 1869, p. LVIII. 

' 

Q 39.5 hy 3.2 Pitt's Head, S. Haughton. S. Haughton, ' Felsite. or 28.4 mt 0.7 Caernarvonshire, Tr. R. Ir. Ae. XXIII, ab21.0 hm3.0 an 1. 7 Wales. p. 615, 1859. 

c 2.1 R. T. 1869, p. LVIII. 

Q 38.6 by 0.4 Near Andlau, · L. van H. Rosenbuseh, Granophyre. or 28.4 mt 0.5 Vogesen. Werveke. Steig. Sehiefer, ab28.8 hm1.6 an 1. 7 p. 384, 1877. 

R. T. 1879, p. XX. 

Q 36.7' by 1.0 Kirneckthal, L. van H. Rosimbusch, Quartz- or 27.8 mt 1.5 Vogesen. Werveke. Steig. Schiefer, porphyry. ab28.8 

an 3.6 p. 383, 1877. 

c 0.8 R. T. 1879, p. XX. 

Q 41.5 hy 0.5 Try berg Waterfall, L. McCay: G. H. Williams, Quartz- InW.T., or 26.1 mt 1.4 Schwarzwald, N. J. B. B., II, porphyry. p. 129: ab 26.7 an 1.4 Baden. p .. 609, 1883. No. 27, alaskose c 2.5 R. T. 1884, p. XVI. 

Q 37.4 hy 2.6 Schonberg, Lemberg. Lemberg, Granite. or 28.9 n. Waldheim, Z. D. G. G., XXVIII, ab26. 2 

I an 1.7 Saxony. p. 597, 1875. ' c 2.4 R. T. 1879, p. XII. 

Q 36.1 by 3.0 J ohanngeorgenstad t, Rube. Scheerer, Granite. or 32.8 Saxony. Festschrift, ab22. 0 an 3.3 p. 180, 1866. 

c 1.7 

"' 

. R. T. 1869, p. XXXIV. 

SUBRANG 4. DOSODIC. TAUROSE. 

Q 56.0 by 2.0 Mte. Menone, G. vc,m Rath. G. vom Rath, Perlite .. or 11.1 Euganean Hills, Z. D. G. G., XVI, ab26.2 

an 1. 7 Italy. p. 516, 1864. 

c 0.2 R. T. 1869, p. XC. 

SUBRANG 5. PERSODIC. WESTPHALOSE. 

s 0.04 Q 50.2 di 0.7 Pasel, Lennegebiet, Jacobs: K. A. Lossen, Quartz- InW.T., Org 0.07 or 3.3 hy 0.6 Westphalia. Sb. Ges. N f. Freunde, keratophyre. p. 131. ab37. 7 mt 1.9 an 3.3 p. 178, 1883. No.2, 

R. T. 1884, P· XX. westphalose. 

'SUBRANG 1. PERPOTASSIC. 

Q 39.1 hy 5.3 Lappinlax, Lemberg. Lemberg, Felsite- or ~9.5 mt 1.2 Isl'd Hochland, Arch. Nk. Livl. IV, porphyry. ab 4.7 an 8.9 Finland. p. 189, 1867. 

c 1.0 R. T. 1869, p. L. 

SUBRANG 2. DOPOTASSIC. MIHALOSE. 

I FeS., 0.13 Q 42.2 by 3.4 "Bodegang," Kesten- Kinkeldey. K. A. Lossen, Felsite- Border of dike; or 29.5 mt 0.9 thal, Harz Mts.· Z. D. G. G. XXVI, porphyry. cf. No. 16, ab 8.4 

I an 8.1 p. 889, 1874." toscanose. 

c 5.0 R. T. 1879, p. XlV. 
24 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

CLASS I. PERSALANE-Continued. 

RANG 2. DOMALKALIC. ALSBACHASE. 

No. Si02 Al,03 Fe20 3 FeO MgO CaO Na20 K20 H,O co, TiO, P,o. 

I 

MnO Sum Sp.gr. 

--- 1 ' 76.32 12.96 n.d. 1. 86 0.49 1. 26 3. 13 4.36 n.d. ) 100.38 

A4. IV 1. 272 .127 -- .026 .012 .022 .050 .047 

2 74.56 11.37 3. 20 1. 98 0.67 0.97 1.97 3.80 0.62 99.14 2.63 

B3. JV 1.243 .Ill .020 .028 .017 .018 .032 .040 

3 74.46 12.59 2.36 2.01 0.85 0.94 2. 78 3.43 0.65 100.07 2.70 ~ 

AS. III 1.241 .123 .015 .028 .021 .017 .045 .036 

4 71.01 11.86 3.92 ~. 31 0.26 2.47 2.59 3;02 0.93 0.09 0.85 100.24 

A?2.II 1.184 .116 .024 .032 . 007 .045 .042 .032 .006 

5 70.33 11.82 3. 73 2.38 0.20 2. 75 2.41 3.09 1. 38 0.14 1. 03 0.53 99.93 

A2. II 1.172 .116 .023 .033 .005 .049 .039 . 033 .013 .004 

6 77.34 14.26 0.94 n. d. 0.08 0.83 2.45 4.82 0.28 101. 00 2. 614 

B3 .. IV 1.289 .140 .006 (.012) .002 .014 .040 .051 

7 76.60 13.21 1.90 0.20 0.16 0.87 3 .. 03 3.90 0.72 100.59 

A3. III 1. 277 .129 0 012 .003 .004 . 016 .049 .041 

8 76.32 15.44 0.37 n. d. 0.36' 1. 83 2.06 3.84 0.49 100.34 

AS. II 1.272 .151 .002 (.004) ',009 .032 .033 .0,40 

9 76.80 12.18 1. 56 11. d. 0.20 1. 07 2.82 4.50 0.89 trace 100.02 . B3. IV 1.280 .119 .010 (.020) .005 . ozo· . 045 .048 . " 

10 76.34 13.22 1.93 n. d. 0.21 1. 85 2.84 3.67 0.61 100.67 2.403 

B3. IY 1. 272 .130 . 012 (0.24) .005 .033 .046 0 039 

I 

RANG 2. DOMALKALTC. ALSBACHASE. 

1 78.75 10.75 1. 29 1. 95 0.47 1.53 3.18 1.71 0.67 100.30 2.71 

A3. III 1.313 .106 .008 0 028 .012 .027 0 051 . 018 

2 74.07 14.47 2.26 n. d. 0.66 2.53 4.23 1. 38 0.70 100.30 

B3. IV. 1.235 .142 .014 (.028) .017 .045 .068 .014 

RANG 3. ALKALICALCIC. RIESENASE. 

' 

1 71.73 15.41 1. 34 1. 38 1. OS •3. 81 3.22 1. 47 0.89 '100. 33 2.54 

A 3. III 1.196 ;151 .008 .019 .027 .068 .052 .015 
PERSAL ANE--ALSBACHOSE •. 25 

ORDER 3. QUARFELIC. COLUMBARE-Continued. 

SUBRANG 3. SODTPOT ASSIC. TEHAMOSK 

I 

Inclusive. Norm. Locality. Analyst. Reference. Author's name. Remarks. 

Q 36.5 hy 4.-6 Baula, Iceland. P. Schirlitz. P. Schirlitz, Liparite. or 26.4 T. l\'L P. M., 1881, ab 26.2 an 6.1 p. 416. 

c 0.8 R. T. 1884, p. L. 

Q 45.0 by 2.8 Simonby, Finland. Kuhlberg. Kuhlberg, Granite. or 22.2. mt 4.6 Arch. Nk. Livl. IV, ab 16.8 an 5.0 1867. 

c 2.1 R. T. 1869, P· XL. 

Q 41.2 by 3.8 Storgard, Finland. Kuhlberg. Kuhlberg, Granite. or 20.0 mt 3.5 Arch. Nk. Livl. IV, ab 23.6 an 4. 7 1867. 

c 2.6 R. T. 1869, p. XL. 

F ,0.93 Q 41.1 hy 0. 7 Capelle Pallokiil, Schridde. v. Ungern-Sternberg, Rapakiwi Cf. No. 24, or 17.8 mt 5.6 Island Dago, Ueber Rapakiwi, ranite alaskose, ab 22.0 ap 2.0 an 7.0 Finland. Leipzig, 1882, p. 40. block). W. T., p. 129. 

c 1. 7 R. T. 1884, p. XIV. . F 0.).4 Q 39.5 by 0.5 Capelle Pallokiil, Schridde (?). v. Ungern-Sternberg, Rapakiwi Cf. No. 24, or 18.4 mt 4.6 Island Dago, Ueber Rapakiwi, granite ( er- alaskose, ab20.4 u 2.0 an10.0 hm0.5 Finland. Leipzig, 1882, p. 40. ratic block). W. T., p. 129. 

c 0.8 ap 1.3 R. T. 1884, p. XIV. 

Q 42.1 hy 1.8 Kirnockthal, Vogesen. Unger. H. Rosenbusch, Aplite. Near alaskose. or 28.4 Steig. Schiefer, 1877, ab21.0 

an 3.9 p. 279. 

c 3.6 R. T. 1879, P· XIV. 

I 

Q 42.1 by 0.4 Ameisenbiihl, Gabriel. Benecke and Cohen, Gra~1ite. or 22.8 mt 0.7 Oberflocken bach, Geog. Besch. Heidelb., ab 25.7 bml.4 an 4.5 Baden. 1879, p. 125. 

c 2. 4 R. T. 1879, P· XII. 

Q 45.4 by 1.4 Grosssachsener Thal, !Schroder. G. Leo'nhard, Granite. Cf. No. 12, or 22.2 Heidelberg, Grund. d. Geogn.1868, tehamose, ab 17.3 . 1111 8.9 Baden. p. 45. W. T., p. 133. 

c 4. 7 R. T. 1_869, p. XL. 

Q 39.4 by 3.1 Telkibanya, K. v. Hauer. K. v. Hauer, Rhyolite. or 26.7 Hungary. Vh. Wien. G. R-A. ab 23.6 an 5.6 1866, p. 99. 

c 0.6 R. T. 1869, P· LXXXVIII. 

Q 40.0 by 3. 7 Telkibanya, K. v. Hauer. K. v. Hauer, Rhyolite. or 21.7 . Hungary. Vh. Wien. G. R-A., ab 24.1 an 9.2 1866, p. 99. 

c 1.2 R. T. 1869, p. LXXXVIII. 

... ---

SUBRANG 4. DOSODIC. ALSBACHOSE. 

-- -----

I Q 49.1 by 3.8 Storgard, Kuhlberg. Kuhlberg, Granite. or 10.0 mt 1.9 Finland. Arch. Nk. Livl., ab 26.7 I 

an 7.5 IV, 1867. 

c 1.0 R. T. 1869, p. XL. 

Q 36.5 by 5.4 Lanna Kiilla, Lemberg. Lemberg, Granite. or 7.8 Island Hochland, Arch. Nk. Livl. ab35.6 

an 12.5 Finland. IV, p. 198, 1867. 

c 1.5 R. T. 1869, p. XLII. 

SUBltANG 4. DOSODIC. 

Q 37.2 by 4.2 Sandvik, Kuhlberg. Kuhlberg, Granite. or S.3 mt 1.9 Finland. Arch. Nk. Livl., ab27.3 

an 18.9 .. IV, 1867. 

c 1.6 R. T. 1869, P· XL. 

.. 
26 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

CLASS I. PERSALANE-Continued. 

RANG 3. ALKALICALCIC. RIESENASE-Continued. 

I 

No. Si02 Al 20 3 Fe20s !<'eO MgO CaO Na20 K.o H20 C02 I Ti02 P.Os MnO Su!Il Sp.gr. I 

I 

1 74.52 14.20 1. 26 n. d. 0. 72 3.47 4.07 0.58 1.18 

-I 

100.00 

A4. IV. 1.242 .139 .008 (.016) . 018 .063 .066 .006 

CLASS I. PERSALANE. 

RANG 1. PERALKALIC. LIPARAS~. 

l 74.50 12.69 0.67 n. d. 0.30 0.14 0.92 9.92 0.73 99.85 

A3. II I 1. 242 .124 .004 (.008) .008 .003 .015 .106 

I RANG 1. PERALKALIC. LIPARASE. 

1 76.80 11.64 0.66 0.50 trace 0.43 2.53 6.69 0.77 100.02 2.50 

A3. III 1.280 .114 .004 .007 - .008 . 040 . 071 

2 75.07 11.40 .053 1. 28 0.11 0.61 1.15 8.33 1. 74 trace trace 100.22 2.40 

A3. III 1. 251 / .112 .003 .. 018 .003 .011 .019 .088 

3' 74.62 11.96 1. 20 0.10 trace 0.36 2.26 7. 76 1. 02 99.18 2.23 .. B3. IV 1. 244 .117 .008 .001 - .006 .036 .083 

4 75.041 13.12 2.12 n. d. 0.34 0.40 2.44 6.32 0. 76 - 100.54 

A4. IV 1. 251 .127 .013 (.026) .009 .007 .039 .067 

5 68.99 13. 78 0.75 n. d. 0.15 2.01 2.99 8.01 2.89 99.57 

A3. III 1.150 .135 .005 (.010) .004 .036 .048 .085 

liANG 1. PERALKALIC. LIPARASE. 

72.26 13.59 1.16 2.18 0:06 1.13 3.85 5.58 0.47 0.45 trace 100.73 2.65 

2. II 1.204 .133 .007 . 031 .002 .020 .062 ,060 .006 

2 73.09 12.76 ]. 07 4.28 0.09 0.30 3.16 5.10 0.73 0.40 0.08 101.06 2.66 

' 

B 2. III 1. 218 .125 .007 .060 .002 ' .005 .051 .054 .005 .001 

3 71.07 12.34 2.25 4.92 0.19 0.55 2.84 5.53 0. 72 0.27 trace 100.68 2.68 

A 2. II 1.185 .121 .014 .068 .005 .010 .046 .059 .003 

4 75.44 13.98 0.54 n.d. trace 0.50 3.48 5.36 0.77 100.07 2.48 . A 4. IV 1. 257 :137 .003 (.006) - .009 . 056 .057 

5 74.48 16.20 0.20 n.d. 0.27 0. 13 3. 78 4.56 0.60 100.22 ~ 

A 3. III 1. 241 .159 .001 (. OO'J) .007 .002 .061 .049 

6 73.60 13.80 2.00 n.d. 0.50 0. 79 4.29 5.22 n.d. 100.20 

A 4. IV· 1. 227 .135 .013 (.026) .013 .014 .069 .055 

i 
PERSALANE-LIP AROSE. 27 

ORDER 3. QUARFELIC. COLUMBARE---:Continued. 

SUI!RANG 5. PERSODIC. VULCANOSE. 

I ., I Inclusive. Norm. Locality. Analyst. Reference. Author's name. Remarks. 

Q 39.0 hy 3.9 Near Launakiilla, Lemberg. Lemberg, Granite. or 3.3 Isl'd Hochland, Arch. Nk. Livl., ab39.6 

<tnl7.5 Finland. IV, 382, 1867. jc 0.4 R. T. 1869, p. XLII. 

ORDER 4. QUARDOFELIC. BRITANNARE. 

SUBRANG 1. PERPOTASSIC. LEBACHOSE. 

Q 29.6 hy 1.9 Selgapajalax, Lemberg. Lemberg, Granite. or 58.9 Island Hochland, Arch. Nk. Livl., IV, ab 7.9 an 0.8 Finland. p. 387, 1867. 

R. T. 1869, p. XLII. 

SUBRANG 2. DOPOTASSIC. OMEOSE. 

Li20 trace Q 36.0 di 0.8 Mohung Hill, Woodward. C. King, Liparite. or 39.5 wo 0.2 Humboldt Range, G. Expl. 40th Par. I, ab21.0 mt 0.9 an 0.8 Nevada. p. 652, 1877. 

R. T. 1879, p. LIV. 

Li20 trace Q 3\l. 5 di 1.5 Pine Nut Canyon, Woodward. C. King, Liparite. or 48.9 by 1.5 Nevada. G. Expl. 40th Par., I, ablO.O mt 0.7 an 1.4 p. 652, 1877. 

R. T. 1879, p. LIV. I 

Q 31.7 ac 0.9 Humboldt Sink, Woodward. [C. King, Liparite. or 46.2 wo 0.7 Montezuma Range, ab 17.8 mt 0.2 . G. Expl. 40th Par., I, hmO.S Nevada. p. 652, 1877. 

R. T. 1879, P· LIV. 

Q 34.0 by 4.3 Brinzio, Gumbel. Gumbel, Felsite- Near liparose. or 37.3 Varese, Sb. Miinch, Ak., 18BO, porphyry. ab20.4 

an 2.0 Piedmont. p. 589. 

c 1.4 R. T. 1884, P· XVIII. 

! Q 18.0 di 3.4 Gala del Inferno, C. Doelter. C. Doelter, Pitchstone. or 47.3 wo 2.3 Monte Schiavone, Ds. Wien. Ak., I ab 25.2 

I an 0.6 Ponza. XXXVI, p. 11, 1875. 

I R. T. 1879, p. LII. 

SUBRANG 3. SODIPOTASSIC. LIP AROSE. 

Q 25.3 di 2. 2 Mount Willard, G. W. Hawes. G. W. Hawes, Granite. Cf. next two· or 33.4 by 1.4 New Hampshire. A. J. S. (3), XXI, below. ab32.5 mt1.6 an 3.1 il 0.9 p. 25, 1881. . 

R. T. 1884, p. XVI. 

Q 31.7 by 5.1 Mount Willard, G. W. Hawes. G. W. Hawes, Granite- Facies of No. 1, or 30.0 mt 1. 6 New Hampshire. A. J. S. (3), XXI, porphyry. li parase, 3 · ab26. 7 il 0.8 an 1.4 p. 25, 1881. feet from 

c 1.5 R. T. 1884, p. XVI. contact. 

Q 28.6 by 7.2 Mount Willard, G. W. Hawes. G. W. Hawes, Granite- Facies of No. 1, or 32.8 mt 3.3 New Hampshire. A. J. S. (3), XXI, porphyry. liparase, 2 . ab24.1 il O.f> an 2.8 p. 25, 1881. inches from 

c 0.6 R. T. 1884, p. XVI. contact. 

Q 33.3 by 0.8 Mount Moses, Fish ' Woodward. C. King, Liparite. or 31.7 Creek· Mountains, G. Ex pl. 40th Par., II, ab29.3 

an 2.5 Nevada. p. 664, 1877. 

c 1.5 R. T. 1879, p. LIV. 

Q 34.1 by 1.0 Ross of Mull, Scotland. S. Haughton. S. Hitnghton, Granite. or 27.2 Tr. R.Ir. Ac., XXIV, abS2.0 

an 0.6 p. 31, 1866. 

c 4.8 R. T. 1869, p. XLIV. 

Q 28;1 di 0. 7 Baniesmore Gap, S. Haughton. S. Haughton, Granite. or 30.6 by 4.4 County Donegal, Tr .. R. Ir. Ac.,.XXIV, · ab36.2 

an 3.1 Ireland. 1866. 

R. T. 1869, P· XLVI. 
28 SUPERIOR ANALYSES 'OF IGNEOUS ROCKS. 

CLASS I. PERSALANE-Continued. 

RANG 1. PERALKALIC. LIPARASE-Continued. 

No. SiO, Al,03 Fe20 8 FeO MgO CaO Na20 K20 H20 CO, TiO, P,05 MnO Sum Sp.gr. 

-- -------- 7 74.01 14.22 0.49 0.46 0.49 0.40 3.14 6.03 0.85 100.09 2.59 

AS. III 1. 234 .139 .003 .007 . 012 .007 ,051 .064 

8 73.43 13.67 1. 41 n.d. 0.20 0.50 3.27 6.27 0.56 99.31 

B4. V 1. 224 .134 .009 (.018) .005 .009 .053 .067 

9 73.26 14.05 1. 41 n. q. 0.39 0.65 3.47 5.57 0.63 0.25 99.68 

A4.lV 1. 221 .137 .009 (.018) .010 .012 .056 .060 I 

10 76.33 12.33 0.82 n.d. 0.3[) 0. 14 3. 16 6.28 0.59 100.00 

A4. IV 1. 272 .121 .005 (.010) .009 .003 .051 .067 

11 75.05 . 12. !l4 1. 56 n.d. 0.23 0. 76 2.58 5.77 0. 76 99.65 

A4.IV ]. 251 .126 .010 (.020) .006 . 014 . 042 .062 ' 

12 72.54 14.16 l. 53 n. d. 0.68 0.84 3. 12 15.59 1. 20 99.63 

A4. IV 1.209 .139 1 (.020) . 017 .015 . 050 . OGO 

13 75.06 11.70 1. 04 1. 57 0.19 1. 01 2.56 6.25 0.63' 0.36 trace 100.37 2.642 

A2. II 1.251 .115 .006 .02~ . 005 . 018 .041 .067 .005 

14 69.01 17.33 0.41 1. 65 1. 17 0.75 3.59 5.24 0.62 99. 77 2.64 

A3: III. 1.150 .170 . 003 . 023 .029 . 014 .058 .055 

15 68.30 15.41 2.97 0.81 1. 27 0.46 4.03 5. 22 0.81 99.28. 2. 66 

B3. IV 1.138 .151 .019 .on .03~ .008 .065 .055 

I 

16 74. 65' 13. 75 1. 86 n.d. 0.14 0.79 3.36 I 5.85 n.d. 100.40 

A4. IV . 1. 244 .1E4 .012 (.024) .004 .014 .05•1 .063 

' 

17 77.05 12.64 0. 76 0.23 0.09 0. 74 3.79 4.50 0.40 100.20 2.599 

A3. III 1. 284 .1~4 .005 .O!J3 .002 .013 . 061 .048 

18 74.11 13.47 0.83 n.d. 1. 27 0.64 4.22 3.92 1. 22 99 ... 68 

A4. IV 1. 235 .132 .005 (.010) .032 .012 .068 • 041 

19 73.00 15.04 1. 74 n. d. 0.41 0.73 3.49 5.23 0.94 100;58 

A4. IV 1. 217 .147 .011 (.022) . 010 .013 .056 .055 

20 74.56 13.52 2.04 n. d. I 0.44 0.32 3.48 4.94 0.64 'c 99.94 

A4. IV 1.243 .132 .013 (.026) .011 .005 .056 .052 

21 70.93 16.38 n. d. 0.36 0.58 0.32 4.52 5.47 1.50 100.06 2.592 ' 

A3. III 1.182 .160 - .005 .015 .005 .073 .059' 23° 

22 70.01 17.63 O.M n.d. 0.11 0.81 3.92 6.55 0.54 100.13 

A4. IV· 1.167 .173 .004 (.008) .003 .014 .063 .070 
PERSALANE-LIP AROSE. 29 

ORDER 4. QUARDOFELIC. BRITANNARE-Continued. 

SUBRANG 3. SODIPOTASSIC. LIPAROSE-Continued. 

I Inclusive. Norm. Locality. Analyst. • Reference. Author's name. Remarks. 

I -- Q 30.8 hy 1.7 Haggais, Finland. Ku':llberg. Kuhlberg, Granite. or 35.6 mt 0.7 Arch. Nk. Livl., IV, ab 26.7 an 2.0 1867. c 1. 7 R. T. 1869, P· XL. 

Q 27.8 hy 2.9 Helsingfors, Finland. Lemberg. Lemberg, Granite. or 37.3 Z. D. G. G., XXII, ab 27.8 an 2.5 p. 369, 1870. 

c 0.5 R. T. 1873, p. X. . Q 28.4 hy 3.4 Helsingfors, Finland. Lemberg. Lemberg, Granite. or 33.4 Z. D. G. G., XXII, ab29.3 -. an 3.3 p. 366, 1870. 

c 0.9 R. T. 1873, p. x. 

Q 32.3 hy 2.2 Selgapajalax, Lemberg. Lemberg, Granite. or 37.3 Island Hochland, Arch. Nk. Livl., IV, ab 26.7 an 0.8 Finland. · p. 387, 1867. ' R. T. 1869, p. XLII. 

Q 34.4 hy 3.2 Lannakiilla, Lemberg; Lemberg, Granite. or 34.5 Island Hochland, Arch. Nk. Livl., IV, ab 22.0 lln 3.9 Finland. p. 198, 1867. 

c 0.8 R. T. 1869, p. XLII. 

Q 28.9 hy 4.3 Abo, Finland. Lemberg. Lemberg, Granite. or 33.3 Z. D. G. G., XXII, I Hb 26.2 an 4.2 p. 360, 1870. c 1.4 R. T. 1873, p. X. 

Q 33.7 di 2.6 Himmekiil Quarry, H. Struve. H. Struve, Rapakiwi or 37.3 hy 0.6 Pyterlaks, Finland. Mern. A c. St. Pet., VI, granite. ab21.5 mt 1.4 an 2.0 il 0. 8 No. 4, p. 33, 1862. 

R. T. 1869, p. XLII. 

Q 23.7 hy 5.5 Ahlon, Kuhlberg. Kuhlberg, Granite. or 30.6 mt 0.7 Vanniis, Finland. Arch. Nk. Livl., IV, • ab 30.4 an 3.9 1867. I c 4.4 R. T. 1869, p. XL. 

Q 22.2 hy 3.2 Mustfinn, Finland. Knhlbcrg. Kuhlbt?rg, Granite. or 30.6 mt 2.6 Arch. Nk. l.i'vl., IV, ab3•1.1 hm 1.3 an 2.2 1867 .. c 2. 4 R. T. 1869, p. XL. 

Q 29.2 hy 3.6 Elfdalen, Sweden. Olshausen. Olshausen, Felsite- or 35.0 Z. D. G. G., XVI, porphyry. ab ~8. 3 an 3.9 p. 6i30, 1864. 

c 0. 3 R. T. 1869, p. LJI. 

Q 36.1 hy 0.2 Kirneckthal, Van \Verveke. H. Rosenbusch, Granophyre. Near toscanose. or 26. 7 mt 0.7 Vogesen. Steig: Schiefer, 1877, ab 32.0 hm0.3 IUl 3.6 p. 378. 

c 0. 2 R. T. 1879, p. XX. 

Q 30.9 hy 4.5 Raben berg, Lemberg. Lemberg, Granite. Near kalle~u- or 22.8 Waldheim, Z. D. G. G., XXVII, dose. ab35.6 

an 3.3 Saxony. p. 545, 1875. 

\ c 1.1 R. T. 1879, p. X. 

Q 29.6 hy 3.9 Waldheim, Saxony. Lemberi!'. ~em berg, Granite. or 30.6 Z, D .. G. G., XXVIII, ab 29.3 Rll 3.6 p. 597' 1876. c 2. 4 R. 'f. 1879, p. XII. 

Q 32.9 hy 4.5 Near Figino, Gumbel. Gumbel, Felsite- or 28.9 Piedmont. - Sb. ~Ii.inch. Ak., porphyry. !\b29.3 

an 1.4 1880, p. 589. 

c 1.9 R. 'f. 1884, p. XVIII. 

Q 21.6 hy 2.2 Ortaccio, Campiglia G. vom Rath. G .. vom Rath, Granite or 32.8 Marittima, Z. D. G. G., XX, (felsite- ab38. 3 an 1.4 Tuscany. p. 328, 1868. porphyry): 

c 2.4 R. T: 1869, p. LU. 

Q 20.0 hy 1.4 Capo Vardella, C. Doelter. C. Doelter, Obsidian. or 38.9 Palmarola, Ds. Wien. Ak., ab33. 0 an 3.9 Ponza Islands. XXXVI, p. 28, 1875. 

c 2. 7 R. T. 1879, p. LII. 
30 SUPERIOR "ANALYSES OF IGNEOUS ROCKS. 

CLASS I. PERSALANE-Continued. 

RANG 1. PERALKALIC. LIPARASE-Continued: 

I 

'" 

No. SiO, Al20 3 Fe20 3 FeO lHgO CaO Na,O K2 0 H 20 co, TiO, P20 5 MnO Sum Sp.gr. 

--- -·1 -~- ---.--- -~---

1 70.97 13.84 3.21 0.78 0.20 1. 26 6.27 1. 57 o. 74 0.79 0.25 100.09 2. 709 

A2. II 1.183 .136 .020 .011 .005 .022 .102 .017 .003 

I RANG 2. DOMALKALTC. TOSCANASE. 

1 68.94 14.31 2.29 2.75 0.47 2.25 1.13- 7.38 0.46 99.98 

AS. Ill 1.149 .140 .014 .039 .012 .010 .018 .079 

2 69.19 14. 12 1. 64 1.71 1. 66 1. 58 1. 81 8.45 n. d. 0.15 trace 100.31 2.69 

A3. III 1.153 I .138 .010 • 0'24 .042 . 029 .029 -090 .001 

RANG 2. DOMALKALIC. TOSCANASE. 

' 

1 70.29 14.85 1. 20 1. 20 0.26 1. 09 3.66 5.66 1. 36 0. 16 99. 73 2.12 

A3. III 1.172 .146 .008 . 017 .007 .020 .059 . 061 .002 

2 70.17 14.53 2.54 1. 74 0.93 2.29 3.25 3.35 1. 5:3 trace 100.33 

A3. III 1.170 .142 .016 . 024 .023 .041 . 052 .036 . ' 

3 73.96 12.44 3.07 0.55 0.14 1. 28 3.00 5.10 1. 00 100.54 

A3. III - 1. 233 .122 .019 .008 .004 .023 .048 .054 

4 72.24 14.92 1. 63 0.23 0.36 1. 68 3.51 5. 10 Il. d. 0.32 99.99 

A3. III 1.204 .146 .010 . 003 .00_9 .030 . 056 .054 . 005 

5 71.76 16.68 1. 08 n. d. 0.28 ]. 48 2.97 5.13 0.60 99.98 

A4. IV 1.196 .163 .007 (.014) . 007 .027 -048 .OM 

6 70.00 16.36 2.80 0.08 0. 71 1. 12 4. 13 4.66 Il. d. 99.86 

A3. III 1.167 .160 -018 -001 .018 . 020 . 066 . 050 

7 69.20 16.40 2.09 1. 00 0.85 1. 03 4.20 5.22 II. d. 99.99 

A3. III 1.153 .161 . 013 . 014 . 021 . 018 -0()8 . 055 

8 68.80 16..40 2.60 0.65 0. 8.5 l. 75 3.78 5. :~1 n. d. 100.14 

A3. III 1.147 .161 -016 .009 . 021 .. 031 .. 061 .0.56 

9 68.20 15.96 3.69 1. 00 0.78 2.92 3.75 4. 14 Il. d. 100.44 

A3. III 1.137 .156 .023 .014 .020 .052 . 060 .044 

10 73. 70 14.44 0.43 1. 49 traee 1. 08 4.21 4.43 0.40 trace trace 100.18 2.69 

' A3. III 1.228 .141 . 003 .021 - .020 • 068 . 047 

11 68.04 17.20 3. 15 0.41 1. 20 2.92 3.25 3.90 11. d. -100.07 

A3. III 1.134 .169 . 020 .006 .030 .052 .053 .041 
PERSALANE-TOSOANOSE. 31 

ORDER 4. QUARDOFELIC. BRITANNARE_LContinued. 

SUBRANG 4. DOSODIC. KALLERUDOSE. 

I 

I Inclusive. Norm. Locality. Analyst. Reference. Author'!l "name. Remarks. 

8 trace Q 25.4 di 1.1 l\'luhlenthal, "Jacobs." K. A. Lossen, Quartz- Near lassenose. Org 0.01 or 9.5 mtl.9 n. Elbingerode, Sb. Ges. Nat. Fr., keratophyre. ab 53.5 il 0.5 an 4. 7 bml.9 Harz Mountains. 1883, p. 178. 

R. T. 1884, p. XX. 

SUBRANG 2. DOPOTASSIC. DELLENOSE. 

Q 27.0 " by 4.5 Pochj akor k ia, Lemberg. Lemberg, Felsite-" or 43.9 mt 3.3 Island Hochland, · Arch. Nk. Livl., IV, porphyry. ab 9.4 an11.1 Finland. p. 181, 1867. c 0.3 R. T. 1869, p. L. 

Cl2 trace Q 20.1 di 2.3 Try berg Waterfall, Hebenstreit. Hebenstreit, Granite. ZnO trace or 50.0 by 5.0 Sch wartzwald," Rtr. Kenntn. Schww., BaO trace ab 15.2 mt 2.3" an 5.3 "Baden. 1877, p. 27. 

R. T. 1879, p. "XII. 

SUBRANG 3. SODIPOTASSIC. TOSCANOSE. 

Q 23.6 by 2.2 Harlequin Canyon, R. W. Wood- C. King, Liparite .. Sp. gr. low. or 33.9 mtl.9 Montezuma Range, ward. G. Expl. 40th Par. I, ab 30.9 an 5.6 Nevada. p. 652, 1878. c 0.6 R. T. 1879, p. LIV. 

Li,O trace Q 31.7 by 3.4 Shoshone Peak, R. W. Wood-" C. King, Dacite. or 20.0 mt 3. 7 Nevada. ward. G. Expl. 40th Par. I, ab 27.3 an11.4 p. 576, 1878. c 1.4 R. T. 1879, P·. LXIV. 

Q 34.4 di 0.8 Ca~aros Hill, S. Haughton. S. Haughton, Granite. or 30.0 mtl.9 County Wexford, Tr. R. Ir. Ac., XXIII, ab 25.2 bm 1.8 an 5.6 · Ireland. p. 608, 1859. 

R. T. 1869, p. XLVI. 

Q 28.5 by 0.9 Doochary Bridge, _S. Haughton. s. Haughton, Granite~ or 30.0 mt 0.7 County Donegal, Tr. R. Ir. Ac., XXIV, ab29.3 bmL1 an 8.3 Ireland. 1866. c 0.6. R.T 1869, p. XLVI. 

Q 30.5 by 2.6 Poulmounty, S. Haughton. S. Haughton, Granite. or 30.0 Ireland. Tr. R. Jr. Ac., XXIII, ab25. 2 an 7.5 p. 59\J, 1859. c 3. 5 R. T. 186\J, p. XLIV. 

Q 24.8 by 1.8 Ard Malin, S. Haughton. S. Haughton, Granite. or 27.8 mt 0.2 County Donegal, Tr. K Ir. Ac., XXIV, ab 34.6 bm2.7 an 5.6 Ireland. p. 8, 1866. c 2.5 R. 'f. 1869, p. XLVI. 

Q 21.4 hy 2.2 Tory Island, S. Haughton. S. Houghton, Granite. or 30.6 mt 3.0 County Donegal, Tr. R. Ir. Ac., XXIV, ab35."ti 

an 5.0 Ireland. · 1866. c 2.0 R T. 1869, p. XLVI. 

Q 21.7 by 2.1 Arranmore Island, S. Haughton. S. Haughton, Granite. or 31.1 mt 2.1 County Donegal, Tr. R. Ir. Ac., XXIV, ltb32.0 bml.l an 8.6 Ireland. 1866. c 1.3 R. T. 1869, p. XLVI. 

Q 23.3 by 2.0 Poison Glen, S. Haughton. S. Haughton, Granite. or 24.5 mt 3.3 County Donegal, Tr. R. Ir. Ac. XXIV, ab s1. 4 hml.4 an14.5 Ireland. 1866. . R. T. 1869, p. XLVI. 

Li20 trace Q 28.8 by 2.4 Peter head, A. H. Phillips. A. H. Phillips, Granite. or 26.1 mt 0. 7 Scotland. Q. J .. G. S., XXXVI, ab 35.6 an 5.6 p. 13, 1880. c 0. 6 H. T. 1884, p. XIV. 

Q 26.2 hy 3.0 Cree town, S. Haughton. S. Haughton, Granite. or 22.8 mt 1.4 Kirkcudbright, Tr. R. Ir. Ac., XXIII, ab 27.8 bm2.2 an14.5 Scotland. p. 607, 1859. 

0 2. 4 R. 'J.'. 1869, p. XLIV. 
32 SUPERIOR ANALYSES OF' IGNEOUS ROCKS. 

CLASS I. PERSALANE-Continued. 

RANG 2. DOMALKALIC. TOSCANASE-Continued. 

~0. SiO, Al20" Fe,03 FeO MgO CaO Na20 K,O ,H,O co, Ti02 P20 5 MnO Sum Sp.gr. 

-- ----- --------

12 72.96 14.00 2.42 0.38 0. 14 1.12 4.33 4.47 n. d. 0.40 100.22 2. 671 

AS. III 1. 216 .137 .015 .005 .004 .020 .069 .048 .006 

13 73.88 14.86 0.10 1.64 0.23 0.89 3.94 3.89 0.82 100.25 

AS. Ill 1. 231 . 146 .001 . 022 .006 .016 . 064 .041 

/ 

14 70.40 15.29 . o. 09 1. 69 0.58 1. 62 4.09 3.89 1. 13 0.28 0.22 99.51 2.68 

A2. II 1.173 .150 . 001 .021 ,015 .029 . 066 . 041 .004 .001 

15 73.39 14.12 0.77 0.67 0.29 1. 25 3.66 4.47 1.22 99.84 

A3. III 1. 223 .138 . 005 . 010 .007 . 022 . O.'i9 . 048 

16 I 71.65 15.58 0.64 2.21 0. O.'i 2.13 3.44 3.66 1. 48 trace 100.84 2.679 

A3. III 1.194 .1521 

15.00 

.004 .031 . 001 .038 . 055 .039 

17 71.55 0.87 3.01 0.06 1. 21 3.61 4. fl2 0. 75 traee 100. 98 2. 66J. 

A3. III 1.193 .147 .006 . 042 .002 .021 . 058 . 052 

18 71. 12 14.58 1. 69 11. d. 0. 15 1. 50 3. 26 ' 6. 01 0. 95 trace 99. 26 

B4. V 1.185 .143 .011 (. 022) .004 .027 . 053 . 064 

19 65.66 15.78 3.25 0.16 0.8S 2.07 B.77 5. 82 3. 45 100. 84 2. 459 

A3. lii 1. 094 .. 155 .021 .002 . 022 .038 . 061 . 062 

RANG 2. DOMALKALIC. TOSCANASE. 

1 69.36 16.23 0.88 1.53 1. 34 3.17 4.06 3.02 0.45 100.04 

AS. III 1.156 .159 .005 .021 .034 .057 .065 .032 

2 67.91 1'1.38 1. 77 1.25 1.35 2.81 5.43 1. R4 -- 0.04 !19.R4 

A3. III 1.132 .170 . 011 .018 . 034 .050 . 087 .020 

' . 3 75.24 13.36 0.60 n. d. 0.14 2.25 4.86 3.27 ·n.d. ~ B\J. 72 I 

A{. IV 1. 254 .131 . 004 (.008) .004 .040 . 079 . .035 

I 

4 75.05 13.66 0.62 1.11 0.46 1. 82 4.78 2.84 0.36 100. 70 

A3. III 1. 251 .134 .004 .015 • 012 .032 . Oi7 .030 

i . 5 74.04 13.01 0.80 0,95 1. 02 2.33 4.60 2.75 0.86 traee 100.89 

A3. JTI 1. 234 .127 .005 .014 .026 . 041 .074 .030 -

6 66.69 15. 72 3.10 0.68 1.18 1. 98 4.45 2.97 2.86 99.63 2.287 

AS. III 1.112 .154 .019 .010 .030 .036 .072 .032 
Inclusive. Non::i::l. 

Q 28.2 hy 0.4 or 26.7 mt 1.2 ub36.2 bm 1.6 an 5.6 

Q 32.5 by 3.4 or 22.8 mt 0.2 ab 33.5 an 4.5 c 2. 6 

Fe~ 0.28 Q 26.3 by 4.0 

or 22.8 mt 0.2 ub34.6 il 0.6 an 8.1 

c 1.4 

Q 31.5 by 1.4 or 26.7 mt 1.2 ab30. 9 an 6.1 c 0. g 

Q 31.6 hy 3.4 or 21. 7 mt 0.9 ub28.8 

an 10.6 c 2.0 

Q 27.2 by 5.0 or 28.9 mt 1.4 ab30A 

an 5.8 c 1.6 

Q 24.2 hy 3.3 or :>5.6 ab 27.8 

~n 7.5 

Q 15.8 di 1.3 I or 34.5 by 1.6 ab 32.0 mt 0.5 an 8.9 bm 3.0 

I -

I 

Q 24.6 by 5.5 or 17.8 mt 1.2 ab34.1 

1Ln15. 8 c 0. 5 

ZuO 0.06 Q 20.9 by 4.3 or 11.1 mt 2. 6 ab•l5.6 

an13.9 

c 1.3 

Q 30.1 di 2.9 or 19.5 wo 1.3 ab41A 

1111 4. 7 

Q 31.6 di 1.1 or 16.7 by 2.1 ab 40.4 mt 0.9 an 7. 5 

Q 30.7 di 4.1 

or 16.7 hy I. 8 ab 38.8 mt 2.:! 

an 6.4 

Q 23.2 hy 3.0 or 17.8 rnt 2. 3 ab 37.7 hm 1.4 an 10.0 

I c 1.4 

6623-No. 28-04--:3 

· PERS.A.LANE-LASSENOSE. 33 

ORDER 4. QUARDOFELIC. BRITANNARE-Continued. 

,SUBRANG 3. SODIPOTASSIC. TOSCANOSE-Continued. 

~-n_e_fe_r_e_r_Ic-·e_. ___ \_A_t_r_tl_l_~_r'_s_I_ra_m_e_.+ __ n_e_r_n_a_r_k_s_. __ Locality. Analyst. I 

i 

500 feet below sumrni t, 8. Haughton. 

.l\iont Blanc, 

France. 

Bjiirketorp, Hasselbom · 

Sect. Linde, 

Sweden. 

'' Bodegang,'' Kinkeldy. 

Kestenthal, 

Harz :!\fountains. 

Schaufelgraben, 

Gleichenberg, 

Frisch. 

Styria. 

Zehnerkopf, Staehe and 

West Tyrol. von John. I 

Zwiilfergipfel, Stache and 

West Tyrol. von John. 

Chiaja eli Luna, C. Doelter. 

Ponza, 

Ponza Islands. 

Molivo, .Mytilene, K. von Hauer. 

.ABgean Sea. 

s. 

R. 

Haughton, 

J. 

p. 

G. Soc. Dubl. IX, 

219, 1862, 

T. 1869, p. XLIV. 

Hu mmel, 

s 

L 

R. 

v. G. Unci., Sect. 

incle.; p. 16, 1873: 

' f. 1879, p. XIV. 

K. A. Lossen, 

z . D. G. G., XXVI, 

889, 1874. 

R. 

P: 

f. 1879, p. XIV. 

Luc lwig, 

T . :i\f. P. M., 1877, 

p . 277. 

R. T. 1879, p. LII. 

Sta che and von John, 

b. "Vien. G. R-A., 

XXVII, p. 237, 1877. 

J 

1 

R. T. 1879, p. XXII. 

Sta che and von J oh11, 

b. Wien. G. R-A., 

XXVTI, p. 237, 1877. 

J 

1 

R. T. 187\!, p. XXII. 

c. 

R. 

Doelter, 

D s. Wien. Ale, 

XXXVI, p.10, 1875. 

T. 1879, p. Lll. 

T 

1 

K. von Hauer, 

v h. Wien: G. R.-A., 

1 873, p. 220. 

R. T. 1S79, p. LIV. (. 

SUBRANG ·1. DOSODIC. LASSENOSE. 

; 

Near Lassen Peak, J. W. Shimer. Hague and Iddings, 

California. A. J. S., XXVI, 

p. 232, 1883. 

R. T. 1884, p. LXVIII. 

Castillo de Ia N neva :Marx. :Marx, 

Guatemala, Z. D. G. G., XX, 

Guatemela. p. 521, ] 868. 

R. T., 1869, p. cxvnr. 

Dunlewy, County S. Haughton. S. Haughton, 

Donegal, Ireland. Tr. R. Ir. Ac., XXIV, 

1866. 

R. T. 1869, p. XLVI. 

Harparboda, Hassel born. Hummel, 

Seet. Linde, Sv. G. Uncl., XLVII, 

Sweden. p. 16, 1873. 

R. T. 1879, p. XIV. 

Baldersniis, Ulfserud, Erdmann. Humnuil and Erdmann, 

Sweflen. Sv. G. Und.,XXXV, 

p. 87, 1870. 

R. T. 1873, p. X. 

Alagez, Armenia. Plohn. Abich, 

G. Armen. Hoehl., 

1882, p. 35. 

R. T. 1884, p. LXVIII. 

I Protogine. 

I 

Granite. 

Graniteporphyry. 

Liparite. 

Felsiteporphyry. 

Felsiteporphyry. 

Liparite. 

Perlite. 

-

Dacite. 

Andesite. 

Granite. 

Granite: 

Granite. 

Pitchstone. 

' 

Near liparose. 

Center of dike.· 

cf. No. 1, 

mihalose. 

Iron oxides. 

InW. T., p.177, 

No. 38, 

lassenose. 

Dried before 

analysis. 

H 20+ =0. 27. 

Near 

kallerudose. 

~ 
34 

No. Si02 Al20 3 Fe20 3 

--- --~~-

1 71.08 17.19 0.52 

A4. IV 1.185 .169 .003 

1 65.26 14.96 1.14 

A3 • III 1.088 .147 .001 

2 68.79 14.80 2.32 

A2 .II 1:147 .145 .014 

1 63.19 18.65 4.01 

A2 .ll 1.053 .183 .025 

2 67.17 16.96 3.45 

A3. III 1.120 .166 .022 

3 65.71 17.08 2.84 

A3 • III 1.095 .167 .018 

, • 

1 66.06 16.46 2.25 

A3. III 1.101 .161 .014 

1 60.60 17.22 4.37 

t\-3. III 1. 010 .169 .028 

2 62.17 20.83 2. 26 

B3. IV 1. 036 . 204 .ll4 

I 

3 61. 87 18.33 3.23 I 

B3. IV 1.031 .180 . 020 

4 ~ 61.55 17.81 3.01 

A3. III 1. 026 .174 .019 

5 61.49 20.·02 3.11 

A3. III 1. 025 .196 .019 

I 

SUPERIOR ANALYSES OJ<' IGNEOUS ROCKS. 

CLASS T. PERSALANE-Continued. 

RANG 2. DOMALKALIC. 'l'OSCANASE-Continued. 

FeO MgO CaO Na20 K 20 H20 co, 

--

Il. d. 0.43 3.16 5.55 0.92 1.15 

(.OOG) .011 .044 .099 .010 

RANG 3. ALKALICALCIC. COLORADASE. 

4.92 0.70 3.30 2.54 4. 70 2.16 

.068 .018 .059 .041 .050 

0.85 1.15 3.81 2.46 4.54 0.71 

.012 .029 .068 . 040 .048 

'-

RANG 3. ALKALICALCIC. COLORADASE. 

1. 89 1. 20 4.86 3.69 1. 95 0.07 

.027 .030 .088 .059 .021 

1. 20 1. 50 4.46 3. 70 1. 55 0.89 

.017 .038 .080 .060 .017 

1. 79 2.57 5.24 3.87 1. 02 n. d. 

.025 .064 .094 .063 .012 

CLASS I. PERSALANE. 

RANG 1. PERALKALIC. NORDMARKASE. . 

.1.10 0. 19 0.79 6.81 5.52 0.62 

.015 .005 .014 .110 .059 

RANG 2. DOMALKALIC. PULASKASE. 

1. 96 0. 75 2.87 3.39 6. 75 0. 80 1. 57 t 

. 028 . 019 .052 .055 . 072 

2.12 0.45 1.68 4.40 6.76 0.25 

.029 . 011 . 030 .071 .072 

2. 51 0.65 2. 11 5.07 6.51 0.46 

.035 .016 .038 .082 . 069 

2.60 0. 47 1. 69 4.08 7.51 0.86 

. OoG .012 .030 .066 .080 

2.72 0.52 1. 88 3.39 7.13 0.46 

. 038 .013 .034 . 055 .076 

I 

Ti02 I 

0.31 

.004 

0.18 

.002 

P20 5 MnO Sum Sp.gr. 

---

100.00 

., 99.68 2.77 

0.01 99.93 2.68 

-

0.25 0.13 100.07 

.002 .002 

trace 100.88 

-

10().12 

0. 55 100.35 

.008 

0. 24 100.52 

.003 

0. 03 trace 100. 95 2. 45 

trace 0. 01 101. 07 2. 45 . 07 

--:iOf.OO 

0. 01 trace 99. 59 2. 46 

0. 02 0. 01 100. 75 2. 43 
PERSALANE-PULASKOSE. 35 

ORDER 4. QUARDOFELIO. BRITANNARE-Continued. 

SUBRANG 5. PERSODIC. JIIARIPOSOSE. 

Inclusive. I Norm. Locality. Analyst. Reference. Author's name. Remarks. -

Q 25.6 hy 1. 9 Pascolax,. Lemberg. Lemberg, Granite. or 5. 6 Island Hochland, Arch. Nk. Livl., IV, ab51. 9 an 12.2 Finland. p. 383, 1867. c 1.6 R T. 1869, p. XLII. 

---

SUBRANG 3. SODIPOTASSIC. Al\IIATOSE. 

Q 21.0 di 0.8 Flogda Quarry, M. Stolpe. l\L Stolpe, Granite. Near toscanose. or 27. & h)' 9.5 Bomlkyrkasocken, Sv. G. Und., Nearly in do- ub 21. 5 mt 1.6 an 15.6 Sweden. XXXI, p. 20, 1869. sa lane. 

R. T. 1873, p. X. 

Q 28.0 di 1.9 Barr-A ndlau, Unger. H. Rosenbusch, Granitite. or 26. 7 hy 2.0 Vogesen., Steig. Schiefer, ab 21.0 mt 1.9 an 15.9 il 0.6 1877, p. 147. hm1.0 R. T. 1879, p. XIV. 

. SUBRANG 4. DOSODIC. YELLOWSTONOSE. 

Q 22.0 hy 3.0 J\'Iount Tajumbina, C. Hoepfner. C. Hoepfner, Dacite. In W. T., p.191. or 11.7 rnt 5. 8 Peru. N. J., 1881, II, No. 47, yellow- ab 30.9 il 0. 3 an24.5 p. 189. stonose. c 1.5 R. T. 1884, p. LXVI. 

Q 27.6 hy 3.8 Nagy-Sebes, C. Doelter. C. Doelter, Dacite. or 9.5 mt 3.9 Siebenbiirgen, T. M.P. M., 1873, ab31. 4 hm0.8 ' tlll12.2 Hungary. p. 93. c 0. 9 R. T. 1879, p. LXIV. 

Q 23.3 di 0. 4 Dognacska, Banat, Niedzwiedzki. Niedzwiedzki, Quartz-diorite. Near tonalose. or 6. i hy 7.1 Hungary. T. M .. P.M., 1878, atJ33.0 mt 4.2 an2.5.6 p. 256. 

R. T. 1879, p. XXXII. 

I 

ORDER 5. PERFELIC. CANADARE. 

SUBRANG 4. DOSODIC. NORDMARKOSE. 

Q 4. 5 uc 3. 7 Hohenburg, Laspeyres. Las)Jt~yres, Liparite. Near phlegrose. or 32.8 di 3.3 n. Berkum, Vh. Nh. Ver. Bonn, ubW.5 Jnt J. 4. Rhenish Prussia. X, p. 394, 1883. 

R. T. 1884, p. XLVJil. 

SUBRANG 3. SODIPOTASSIC. PULASKOSR 

Q 8.1 di 2. 2 Arzbaeherkopf, Gtimbel. Giimbcl, Trachyte. or 40.0 hy 0.9 'Vesterwald. Sb. Miinch. Ak., ab 28.8 mt 6. 3 anll. 7 1882, p. 220. 

R. T. 1884, p. L. 

Cl trace Q 5. 5 hy 3.1 Monte Tabor, C. W. C. Fuchs. C. W. C. Fuchs, Trachyte. or 40.0 mt 3.3 Ischia. T. M. P. l\1., 1872, ab37. 2 

an 8.3 p. 229. c 3. 2 R. T. 1873, p. XXXVI. 

Cl 0.32 Q 6. 7 di 0.9 Monte V etta, Ischia. C. W. C. Fuchs. C. \V. C. Fuchs, Trachyte. or 38.4 hy 3.1 T . .i\1. P. l\1., 1872, ab 32.5 mt 4.tl an 9.5 p. 232. so 4.9 R. T. 1873, p. XXXVIII. 

Q 3.8 di 0.:} Punta della Cilna, C. V.'. C. Fuchs. C. "r· C. Fuchs, Trachyte. or 44.5 h)' 3. 2 Ischia. T. M. P . .i\L 1872. ab 34.6 mt 4. 4 an 7.8 p. 230. 

R. 'f. 1873, p. XXXVI. 

Q 8.3 hy 3.8 Marecocco, Ischia. C. W. C. Fuchs. C. 'V. C. Fuchs, Trachyte. or 42.3 mt 4. 4 T . .i\1. P. M., 1872, ab28.8 

an 9.5 p. 229. 

c 3.2 R. T. 1873, p. XXXVI. 
36 SUPERIOR ANALYSES OF IGNEOUS ROOKS 

CLASS I. PERSALANE-Continued. 

RANG 2. DOJV£ALKALIC. PULASKASE-Continued, 

No. Si02 Al,03 Fe,03 FeO .iVIgO CaO Na20 K20 

~I co, ---

6 60.77 19.83 4.14 2.43 0.34 1. 63 4.90 6.27 0.24 

AS. III l. 013 .194 .026 .033 .009 0 029 .079 0 067 

7 59.12 21.46 2.68 2. 72 0.84 2. 16 3. 78 7.66 0.25 

A~. III 0 986 0 210 .017 .038 .021 .039 0 061 .082 

' 

RAXG 2. DOMALKALIC. PULAST{ASE. 

1 61.05 18.35 4.21 2. 12 0.90 2.05 5.94 5.28 0.32 

A3. Til l. 018 .180 .026 .029 .023 . 037 . 096 .056 

2 61.47 18.09 5.14 3.06 1. 32 3.00 5.85 2.83 n. d. 

A3. III 1. 025 ,177 .032 .043 .033 .053 .094 .030 

3 61.43 17.51 5.11 2.30 0.54 2.45 6.22 3.95 n. d. 

A3. III 1. 024 .171 .032 .032 .014 .044 .100 .042 

4 60.24 20.28 2.32 3.88 0.50 1. 96 7.80 4.28 11. d. 

C3. V 1.004 .198 .014 .Oii4 .013 .036 .1:2G . 04G 

' 

CLASS l. PERSALANE. 

RANG 1. PERALKALIC. MIASKASE. 

1 56.43 20.58 2.88 1:28 0.28 1. 4.'i I 8.62 4. 23 ! 2. 9o 1

' 

; I 

.A 2. II 0 941 0 202 . 018 .018 .007 . 026 .139 . 045 

2 55.92 20.35 2.16 . 0. 94 0.62 2.21 8.35 4.83 3.51 

A 2. II 0 932 . 200 .014 0 013 .016 . 039 .136 . 002 

I 

3 55.01 21.67 1. 95 1. 86 0.13 2.12 9.78 3.54 2.17 I 

A 2. II c917 . 212 .012 .026 • OO:l . 03R .15S .037 

4 55.21 21. 78 2.06 2.01 I 0.13 2.10 10.64 3.48 2.07 

A 2. II . 920 . 213 .013 . 028 .003 .03R .1<2 . 037 

- 56.30 24.14 1. 99 Jl. d. 0.13 0.69 fJ.28 6. 79 1. 58 

A4. IV . 938 . 28G .013 (. 026) . 003 . 013 .150 . 072 

-------

RASG 2. DOMALK.~LTC. VIEZZENASE. 

--,_,--------------- ----

1 55.40 21.03 1. 64 3.04 0 . 91 3.57 7.64 4.42 0. 9.5 

A2. II . 923 . 206 .010 . 042 0 023 . 064 . 123 . 047 

2 48.46 21.81 2.17 3. 75 0 0 68 4.58 8.41 5.8fl 2.08 

A3. III. .808 .214 . 014 .052 .017 .082 .135 . 063 

TiO, P20 5 Mno 

--

trace trace 

- -

trace 

-

trace 0.04 

- .001 

trace 0.06 0.66 

- - . 009 

0.18 0.50 

. 001 .007 

0.27 0.08 0.22 

.003 . 001 .003 

trace trace 

-

0. 4B I I 0. 23 · trace 

005 0 002 

tr-ace 

Sum 

---

100.55 

100.67 

100.26 

100. 76 

99.51 

101. 26 

9\}.66 

100.04 

99.41 

100.00 

100.\:JO 

99. 8:~ 

100.90 

Sp.gr. 

---

2.44 

2.53 

2.72 

2.34 

2.4!}9 

2.452 

2.513 

2.48 

2.54-

2.59 
PERSALANE-VIEZZENOSE. 37 

ORDER 5. PERFELIC. CANADARE--Continued. 

SUBRANG 3. SODIPOTASSIC. PULASKOSE-Continued. 

Inclusive. Norm. Locality. Analyst. Reference. Author's name. Remarks. 

Q 3.8 hy 1.8 Monte Rotaro, Ischia. C. W. C. Fuchs. C. W. C. Fuchs, Trachyte- or 37.3 mt 6.0 T.l\L P.M., 1872, obsidian. ab 41.4 an 8.1 p.232. 

c 1.9 ;_It. T. 1873, p. XXXVIII. 

Q 0.4 hy 4.9 Panza, Ischia. C. W. C. Fuchs. C. W. C. Fuchs, Trachyte. or 45.6 mt 3.9 T. M. P. M., 1872, ab 32.0 an 10.8 p. 230. 

c 2. 9 R. T. 1873, p. XXXVI. 

SUBRANG 4. DOSODIC. LAURVIKOSE. 

Q 0. 3 di 2.0 Monte dell'Impera- C. W. C. Fuchs. C. W. C. Fuchs, Trachyte. Near pulaskose. or 31.1 hy 1.8 tore, Ischia. T.l\L P.M., 1872, ab 50.3 mt 6.0 an ·7.8 p. 231. 

R. T. 1873, p. XXXVIII. 

Q 7.9 di 4. 7 Montagna Grande, H. Forstner. H. Forstner, Augite-andesite. In W. T., p. 203, or 16.7 mt 7.4 Pantelleria. Z. K., VIII, No. 24, laur- ub49.3 

an 14.7 p. 155, 1884. vikose. 

R. T. 1884, P: ,LXVIII. 

Q 5.0 di 3.3 Porto Scauri, Pantel- ·H. Forstner. H. Forstner, Augite-andesite. In ~w. T., p. 203, or 13.4 mt 7.4 leria. Z. K., VIII, No. 25, laur- ab f>2.4 an 8.1 p. 164, 1884. vikose. 

R. T. 1884, p. LXVIII. 

or 25.6 di 2.4 Montagna Grande, E. Maegis. H. Forstner, Augite-andesite. In W. T., p. 203, ub 50.3 ol 4.1 Pan tellcria. z. K., VIII, No. 26, laur- an 7.2 mt 3.2 ne 8.5 p. 155, 1884. ' vikose. 

R. T. 1884, p. LXVIII. 

ORDER 6. LENDOFELIC. RUSSARE. 

SUBRANG 4. DOSODIC. MIASKOSE. 

Zr02 truce or 25.0 di 1.7 Magdeberg, Hegau, G.F.Fohr. G. F. Fijhr, Phonolite. In ~w. T., p. 211, so, 0.22 ab 4.>.1 mt 4.2 Germany. In. Diss., ~Wurzburg, No. 40, miask- Cl 0. 07 an 5. 0 

F trace nc 15.1 1883, p. 32. ose. Li20 trace R. T. 1884, p. LIV. 

so, 0.23 or 28.9 di 3.4 Staufen, Hegau. G. F. Fohr. G. F. Fohr, Phonolite. In W. T., p. 211, Cl 0.06 ab 35.6 wo 2.3 Tn. Diss., 'Vnrzburg, No. 41, miask- F trace an 3. 6 mt 3.2 

Li20 trace ne 19.0 1883, p. 28~ ose. Cu 0.18 R. T. 1884, p. LII. 

so~ 0.•11 or 20.6 di 3. 4 Hohentwiel, Hegau. G. F. Fohr. G. F. Fohr, . Phonolite. In W. T., p. 213, Cl 0.08 nb40. 9 wo 0.8 In. Diss., 'Vurzburg, No. 42, miask- F trace an 6.1 mt 2.8 NiO trace ne 18.5 il 0.5 1883, p. 28. ose. Cu 0.12 no 2.6 R. T. 1884, p. LII. Zn trace 

so. 0.46 or 20.6 di 4.4 Hohentwiel, Hegau. Bernath. Bernath, Phonolite. Of. Nos. 40-42, Cl 0.07 ab38. 8 wo 1.9 Btr. Kenntn. Phon. miaskose, w. :u.o trace an 1.1 mt 3.0 ne27.8 Hohentw., Berne, T., p. 213. 

1877, p. 41. 

R. T. 1879, p. LVIII. 

or 40.0 ol 2.9 Ditro, Siebenbiirgen, Fellner. Fellner, Ditroite. Of. No. 46, mi- ab2J.5 Hungary. Vh. Wien., G. R.-A., askose, W. T., an 3. 6 ne 31.0 1867, p. 286. p. 213. 

. R. T. 1869, p. LX . 

SUBRANG 4. DOSODIC. VIEZZENOSE. 

so. 0.57 or 26.1 di 6. 6 Campanario, Palma, Mardner. Sauer, Hornblende- Calc. from sol. Cl trace ab 33.6 ol 2. 9 Canary Islands. U nters. Phon. Gest. andesite. and insol. s trace an 10.0 mt 0.9 ne 16.8 il 0. 8 Canar., 1876, p. 60. 

R. T. 1879, p. LXVI. 

~· 2.97 or 35. o di 6.4 Sant' Antao, Kertscher. C. Doelter, Leucitophyre. Near _essexose. 0.13 ab 7.9 ol 2. 6 Cape Verde. Die Capverden., 1882, an 15.3 mt 3.;{ ne 0.3 p. 21. so 1.9 R. T. 1884, p. LXII. no26. 3 
38 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

CLASS I. PERSALANE. 

RANG I. PERALKALIC. VARINGASE. 

No. Si02 Al20 3 

I 

.Fc20 3 FeO MgO CaO Na20 K,O n,o I co, Ti02 P20 5 MnO Sum l Sp.gr. 

--------- ------- ------------- 1 68.54 9.49 8.60 3.23 0.42 ().54 3.14 5.11 0.30 1. 36 trace 100.78 2. 789 

A2. II. 1.142 .093 .054 . 044 .011 .010 . 051 .054 .017 - 16° 

2 70.30 6.32 9.23 l. 40 0.89 0.84 7.70 2.50 0. 82 100. 00 12. 69 

AS. III. 1.172 .062 .057 .019 .022 .015 .124 . 026 

I I RANG 2. DOMALKALIC. 

1 72.32 1::1. :J7 0.57 2.34 3.57 1. 88 2.76 2.30 0.68 99. 79 I AS. III. 1. 205 .131 . 004 .032 .089 .034 .045 .024 

RANG 4. DOCALCIC. 

-----

1 66.88 11.69 1. 68 8.94 3.55 5. 41) 1. 25 0.20 1. 03 trace trace 100.67 

A3. III. 1.115 .115 .011 .124 . 089 . 097 . 020 . .002 - -

CLASS II. DOSALANE. 

RANG 1. PERALKALIQ. PANTELLERAS.E. 

I 

1 71.50 10. 79 3.52 2.88 0.31 0. 15 2. 76 6.87 1. 00 0. 13 0.25 0.30 100.46 

A2.II. 1.192 .106 .02'2 .040 .008 .oos .045 .07S .003 .004 

RANG 1. PERALKALIC. P ANTELLERASE. 

1 65.80 1 12.80 6.64 0.18 1. 78 2.92 4. 16 4.40 1. 20 99.88 

AS. III. 1.097 .125 .041 .003 .045 .ooz .067 .047 

2 68. 7.5 11.40 4.ao 3.30 1. 46 1. 24 5.37 4.22 0.30 in Si02 trace 100.34 

AS. III. 1.1461 .112 .027 .046 .037 .022 .087 .045 -

3 69.61 8.02 7.17 2.83 0.65 0.88 7.47 2.88 0.74 100.25 2.44 

A3. III. 1.160 . 078 .045 .039 .016 .016 .120 .031 

4 69.02 10.09 4.42 4.56 0.76 1. 45 6.29 3. 70 n.d. 100.58 2.46 

AS. III. 1.150 .099 .027 .06S .019 .0'26 .101 .039 

5 68.33 10.94 3.74 5.41 0.16 1. 36 7.09 4.08 n.d. 10l.36 2.48 

B3.IV. 1.139 .107 .023 .075 .004 . 024 .115 .044 
Inclusive. Norm. 

Cl trace Q 31.0 ac 5.5 CuO trace or 3o.o· di 2. 2 ab 20.4 mt 6.3 il 2. 6 hm2.4 

Q 29.1 ac 26.2 or 14.5 ns 3.9 ab 18.9 di 3. 5 hy 3.1 

Q 36.4 hy1~. 6 

or 13.3 mt 0.9 

ab23.6 

an 9.5 

c 2. 9 

Q 35.5 di 0.9 or 1.1 hy~3.4 

ab10.5 mt 2.6 an25. 9 

Q 28.2 aci 5.5 or 40.6 di 0. 7 ab17.3 hy 4.0 mt 2.3 il 0.5 

Q 18.5 di 8.9 or 26.1 hy 0.4 ab35.1 mt 0. 7 an 3.1 hm6.1 

Q 17.8 R.e 9. 2 

or 25.0 di 5.1 ab35.1 hy 6.3 mt 1.6 

Q 24.8 ae 20.8 or17.2 ns 3.5 ab24. 6 di 3.8 hy 4.8 

CuO 0.29 Q 19.6 ac 12.1 or 21.7. ns 1. 7 ab31. 4 di 6. 3 hy 7.0 

cuo 0.25 Q 14.5 ac 10.6 or 24.5 ns 4.9 

ab33.0 di 6.0 hy 7.1 

DOSALANE-GRORUDOSE. 

ORDER 3. QUARFELIC. HISPANARE. 

SUBRANG 3. SODIPOT ASSIC. V ARINGOSE. 

Locality. 

Altendiez, Nassau. 

Kharti bugal, 

Pantelleria. 

Fabbiasco, n. Lugano, 

Piedmont. 

Analyst. Reference. 

Senftner. J. Petersen, 

N. J., 1872, p: 593. 

R. T. 1873, p. XII. 

H. Forstner. H. Forstner, 

Z. K., VIII, 

p. 173, 1884. 

R. T. 1884, p. LXVI. 

SUBRANG 4. DOSODIC. 

Slaytor. T. 

R. 

Harada, 

N . J. B. B., II, 

p. 42, 1883. 

T. 1884, p. XVIII. 

SURRANG 4,5. PRESODIC. 

Little .Falls, Streng. Streng, 

Minnesota. N. J., 1877, p. 230. 

R. T. 1879, p. XXXVI. 

ORDER 4. QUARDOFELIC. AUSTRARE. 

SUBRANG 2. DOPOTASSTC. 

Monte Mufetto, Giimbel. Gii.mbcl, 

Serimando Valley, Sb. Miinch. Ak., 1880, 

Bergamask Alps. p. 189. 

R. T. 1884, p. XVIII. 

SUBRANG 3. t:>ODIPOTASSTC. GRORUDOSE. 

Urrismenagh, I S. Haughton. S. Haughton, 

County Donegal, Tr. R. Ir. Ac., 

Ireland. XXIV, 1866. 

R. T. 1869, p. XLVI. 

Bald uinstein, Giimbel. Giimbel, Hesse-~ assau. Sb. Miinch. Ak., 

1882, p. 210. 

R. T. 1884, p. XVI. 

Kharti bugal, H. Forstner. H. Forstner, 

Pantelleria. Z. K., VIII, 

p. 173, 1884. 

R. T. 1884, p. LXVI. 

Cuddia Mida, H. Forstner. H. Forstner, 

Pantelleria. Z. K., VIII, 

- p. 182, 1884. 

R. T. 1884, p. LXVI. 

Khania, H. Forstner. H. Forstner, 

Pantelleria. Z. K., VIII, 

p. 170, 1884. 

R. T. 1884, p. LXVI. 

., 

Author's name. Remarks. 

Felsiteporphyry. 

Pantellerite. In W. T., p. 219, 

No. 4, varing- ose. 

Felsophyre. Alkalies low? 

Quartz~diorite. 

.. -

Felsite- Near omeose. porphyry. 

Granite. Iron oxides? 

Felsiteporphyry. 

Pan telleri te. In W. T., p. 224, 

No. 7, grorudose. 

Pantellerite. In W. T., p. 221, 

No. 8, grorudose. 

Pantellerite. Not in W. T .. 
40 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

CLASS II. DOSALANE-Continued. 

RANG 1. PERALKALIC. PANTELLERASE-Continued. 

No. SiO, Al 20 3 Fe,03 FeO MgO CaO Na,O K,O H 20 co, TiO, P20 5 MnO Sum Sp.gr. 

--- ----------------- 1 65.93 11.33 4.65 4.69 1.10 2.36 4.58 3.44 1. 83 99.91 

A3. III 1. 099 .111 .029 . 065 .028 .042 .074 .036 

2 67.89 11.53 4. 51 4.52 0.62 1.51 5. 79 3. 71 0.33 100.41 2.43 

A3. III 1.132 .113 . 028 .062 .016 . 027 .093 .039 

3 67.48 9.70 7.42 2.21 0.77 1. 45 7.21 2.94 0.96 100.14 2.68 

A3. HI 1.125 .095 .046 .030 ' .019 .026 .1161 .031 

4 67.18 14.18 4.00 2.48 0.34 2.78 5.89 4.01 -- 100.86 2.40 

A3. III 1.120 .139 .025 .035 .009 .050 .095 .043 

RANG 2. DOMALKALIC. DACASE. 

1 61.93 13.18 3.63 2.31 4.59 3.48 2.67 6. 11 1. 14 99.04 

B3. IV 1. 032 .129 .023 .032 .115 .063 .044 .065 

2 64.94 17.50 0.69 3.94 2.83 2.59 3.44 3.11 1. 36 100.40 2. 72 

A3. III 1.082' .171 .004 .055 .071 :046 . 055 . 033 

' 

3 64.65 14.13 5.24 3.02 1.41 1. 65 2.78 5.26 1.97 0.29 0.50 trace 100.90 2.659 

A2. II 1.078 .138 .033 .G42 .035 .030 .045 .056 . 006 -

4 66.57 15.59 0.37 4.25 1. 88 1. 85 3.69 5.27 0.62 traee trace traee 100.09 2.637 

A3. III 1.110 .152 .002 .059 . 0-17 .033 .060 . 056 

I 

- -

RANG 2. DOMALKALIC. DACASE. 

1 65.27 15.76 1. 36 3.44 2.14 3. 70 4.57 8. fl7 0.42 0.26 100.89 

A3. III 1. 088 .154 .009 . 048 .054 .066 .074 .043 .002 

2 56.59 12.41 5.39 10.28 2.02 6.70 4.27 1. 02 1. 45 traee 0.22 0.44 100.79 

A2. II .943 .122 .034 .143 .051 .120 . 069 . 012 . 003 .003 

3 68.49 12.42 6.41 1. 34 1. 32 4. 17 4.fJO 1. 78 2.88 traee 0.85 99.56 2.52 

A3. III 1. 058 .121 .040 . 018 .033 .075 .079 . 019 - . 012 15° 

4 64.39 15.flfl 1. 47 5.98 1. 67 2.57 4.96 2.46 o. 76 traee trace 99.25 

B3. IV 1. 073 .156 .009 .083 .042 .046 .080 . 027 

5 67.74 18.04 4.48 3.81 1. 01 8.08 4.80 1. 55 0.88 100.39 

A3. III 1.129 .128 .028 .053 .025 .055 .077 .017 

6 70.17 11.10 1. 92 2.86 1. 28 3.34 3. 77 3.23 1. 87 99.49 

A3. III 1.170 .109 .012 .040 .031 .060 . 061 .034 

7 60.78 16.90 4. 79 4. 11 2.89 1. 50 4.01 2.69 2.84 100.51 2.698 

A3. III 1. 013 .166 ,030 .057 .072 . 027 .065 . 029 

l 
DOSALANE-DACOSE. I 41 

ORDER 4. QUARDOFELIC. AUSTRARE-Continued. 

SUBRANG 4. DOSODIC. PANTELLEROSE. 

\ Inclusive. Norm. Locality. Analyst. Reference. Author's name. Remarks. 

Q 19.9 di 9. 6 Yxsta, Sect. Orebro, Hasselbom. Gumiilius, Granite. or 20.0 hy 2. 7 Sweden. Sv. G. Und.,XLVIII, ab38.8 mt 6.7 an 0.3 p. 18, 1873. 

R. T. 1879, p. XIV. 

Q 16.9 ac 8.8 Monte San Elmo, H. Forstner. H. Forstner, Pantellerite. ln ,V. T., p. 221, or 21.7 di 6. 5 PanteJleria. z. K., VIII, No. 3, pant2l- ab38.8 by. 5.3 rot 2.1 p. 186, 1884. lerose. 

R. T. 1884, p. LXVI. 

Q 17.4 ac 21.3 Monte San Elmo, H. Forstner. H. Forstner, Pantellerite. In"'· T., p. 221, or 17. 2 ns 0. 8 Pantelleria. Z. K., VIII, No. 4, pantel- ab 33.5 di 6. 2 hy 2.8 p. 186, 1884. lerose. 

R. T. 1884, p. LXVI. 

Q 13.3 di 4.4 Cala Porticello, H. Forstner. H. Forstner, Liparite. Not in "'· T or 23.9 wo 3.5 Pantelleria. Z. K., VIII, ab49.8· mt 5.8 an 0.3 ' p. 133, 1883. 

R. T. 1884, p. L. 

SUBRANG 3. SODIPOTASSIC. ADAli!ELLOSE. 

I Q 10.3 di 9.4 Laveline, V ogesen. van W erveke. H. Rosenbusch, Granite. or 36.1 hy 8. 3 N. J., 1881, l, ab23.1 rot 5.3 an 5.6 p. 235. 

R. T. 1884, p. XIV. 

I Q 21.0 hy13.8 Lippenhof, n. Try- Gattermann? G. H. Williams, Quartz-diori fe- Near dacase, cf. or 18.4 mt 0.9 berg, Schwarzwald, N. J. B. B., II, porphyry. No. 12, adam- ab28.8 

an 12.8 Baden. p. 624, 1883. ellose, "'· T., c 3.8 R. T. 1884, P· XXX. p. 223. 

Q 22.4 hy 3.9 Coriillchen, G. Pringsheim. G. Pringsheim, Granite- Near toscanose. or 31.1 mt 7. 7 n. Liebenstein, Z. D. G. G., XXXII, porphyry. ab 23.6 il 0.9 ,, a•i 8.3 Thuringia. p. 144, 1880. c 0. 7 R. T. 1884, p. XVI. 

CuO trace Q 14.6 hy12.2 Kirche W ange, 0. Jung. 0. Jung, Granite- Near toscanose. or 31.1 mt 0.5 Silesia. Z. D. G. G., XXXV, porphyry. ab 31.4 an 9.2 p. 830, 1883. c 0.3 R. T. 1884, p. XVI. 

SUBRANG 4. DOSODIC. DACOSE. 

I. Q 11.6 di 6.7 W a tab, Minnesota. Streng. Streng, Quartz-diorite. Near or 23.9 hy 6. 8 N. J., 1877, adamellose. ab 38.8 mt 2.0 an10.3 p. 230. 

R. T. 1879, p. XXXVI. 

Q 8.8 di 16.4 Sank Center, Streng.' Streng, Quartz-diorite. Near III, 4, 2, 4: or 6. 7 hyll.1 Minnesota. N. J., 1877, 1ib36.2 mt 7.9 an 11.4 ap 1.0 p. 227. 

R. T. 1879, p. XXXIV. 

3?· trace Q 20.3 di 7.2 Yate Volcano, H. Ziegen- H. Ziegenspeck, Augite- In ,V, T., p. 227, trace or 10.6 wo 2.2 Patagonia. speck. ln. Diss., J ena, 1883, andesite. N o.ll, dacose. Cu trace ab41. 4 mt 4.2 an 6.4 hm3.5 p. 46. 

R. T. 1884, p. LXXII. 

Q 12.2 hy14. 0 Peterhead, Scotland. A. Phillips. A. Phillips, Segregation in Cf. No. 10, tos- or 15.0 mt 2.1 Q. J. G .. S., XXXVI, granite. canose. ab 41.9 an12.8 p. 13, 1880. c 0. 3 R. T. 1884, p. XIV. 

Q 25.6 di 4.9 Finaker, Hummel. Hummel, Granite. or 9.5 hy 3.4 Sect. Linde, Sv. G. Und., ab40.4 · rot 6.5 an 9.5 Sweden. XL VII, p. 16, 1873. 

R. T. 1879, p. XIV. 

Q 28.0 di 10.6 Klausen, von John? Teller and von John, Quartz-diorite. or 18.9 by 1.5 Vildarthal, Jb. Wien. G. R-A., ab32.0 mt 2.8 an 3.9 Tyrol. XXXII, p.- 653, 1882. 

R. T. 1884, p. XXVIII. 

Q 17.8 hy 10.8 Suldenferner, von John. Stache and von John, Quartz- or 16.1 mt 7.0 Mte. Cevedale, Jb. Wien. G. R-A .. porphyrite. ab 34.1 un 7.5 Tyrol. XXIX, p. 403, 1879. c 4.6 R. T. 1884, p. XXXIV. 
42 SUPER~OR ANALYSES OF lGNEOUS ROCKS. 

CLASS II. DOSALANE-Continued. 

RANG 3. ALKALICALCIC. TONALASE. / . No. Si02 Al20, Fe20 3 FeO MgO CaO Na.o K.o H20 co. Ti02 PzOs MnO Sum Sp.gr. 

,_--.-- --------

1 57.88 15.20 7.50 1. 35 6.34 4.81 2.67 3.03 1. 04 99.82 ' 

A3. III .965 .149 .047 .019 ,159 .086 .044 . 032 

2 I 56.321 18.26 3.70 4.28 4.15 6. 13 2.37 2.67 2.22 100.10 ·- A3. III . 939 .179 .023 .. 060 ,104 .109 .039 .029 

3 62. 75 17.11 2.20 5.61 0. 77 4.57 2.57 4.41 0.50 100.49 

AS. lii 1.046 .168 .014 .078 . 019 .082 .042 . 047 

- " \ 

4 57.02 16.52 3.25 6.27 2.42 8.64 2.38 2.54 1. 28 100.32 2.703 

AS. III .950 .162 .020 .088 ,061 .154 .039 .027 ... -

RANG 3. ALKALICALCIC. TONALASE. 

1 60.32 16.92 5.88 1. 40 3.52 5.64 3.83 2.42 0.44 100.37 

AS. III 1.005 .166 .036 .019 .087 .101 .061 .025 

1 59.97 16.93 2.41 4.83 3.61 5.10 3.87 1. 32 1. 60 99.64 

AS. III 1.000 .166 .015 .067 .090 .091 .063 .014 

f 

2 59.95 17.35 1.44 5.59 2.88 6. 75 3.30 2.08 1. 42 100.76 2.776 

A3. III .999 .170 .009 .078 .072 .121 .053 .022 I 

3 56.85 16.70 5.92 7.13 3.25 5.97 2.78 1. 91 0.54 101.05 

BS.IV . 948 .164 .OS7 .099 .081 .107 .045 .0'20 

4 58.01 18.19 3.40 2.89 3.01 7.55 3.92 1. 39 1. 60 99.96 

AS. III . 967 .178 .021 .040 .075 .135 .063 .015 

RANG 4. DOCALCIC. BANDASE. 

1 52.02 17.14 7.96 3.52 ::U3 11.57 2.38 0.60 0.28 trace trace 99.45 2.76 

AS. III .867 .168 . 050 .049 .078 .207 .039 .006 - - 16° 

2 56.20 15.26 7.74 5.09 3.21 9.50 2.70 0.62 -- 100.32 

AS. III . 937 .150 .048 .071 .080 .170 .044 .006 I 

3 61.37 15.76 4.06 2.94 2.86 7.27 3.04 0.71 2.64 100.65 2.72 

AS. III 1. 023 .154 .026 .041 . 072 .130 .049 .008 

4 57.82 18.00 2.15 3.47 3.16 11.90 2.34 0.97 1. 03 100.84 

AS. III . 964 ·F6 .014 .049 .079 .213 .038 .010 

I 

I 
DOSALANE-BANDOSE. 43 

ORDER 4. QUARDOFELIC. AUSTRARE-Continued. 

SUBRANG 3. SODIPOTASSIC. HARZOSK 

I 

Inclusive. 

I 

Norm. Locality. Analyst. Reference. Author's name. Remarks. 

Q 11.5 di 2.8 West Aston, S. Haughton S. Haughton; Greenstone Iron oxides? or 17.8 hyl4.6 County Wicklow, Tr. R. Ir. Ac., XXIII, (diorite). Of. No.2, ab 23.1 rnt 4. 4 an 20.3 hm4.5 Ireland. p. 619, 1859. shoshonose. 

R. T. 1869, p. LXIV. 

Q 10.3 hy15.3 Gaddviken, Tornebohm. Ti)rnebohm. Diorite. Near II. 5. 4. 3. or 16.1 mt 5.3 Animskogssoeken, Sv. G. Uncl., ab 20.4 b an 30.3 Sweden. XXXIV, p. 31,1870. 

c 0.2 R. T. 1873, p. XVIII. 

Q 16.1 di 0. 7 Lanna Korkia, Lemberg. Lemberg,· Labradorite- or 26.1 hy 9.9 Island Hochland, Arch. Nk. Livl., porphyry ab 22.0 mt 3.3 an 22.0 Finland. IV, p. 179,1867. (diorite). 

R. T. 1869, p. LXIV. 

Q 10.5 di 13.5 Hintere Gratspitze, von John. Stache and von John, Suldenite. or 15.0 hy 8.3 1\i.te. Cevedale, . Jb. Wien. G. R-A., ab 20.4 mt 4.6 

an 26.7 Tyrol. XXIX, p. 395, 1879. 

R. T. 1884, p. XXXIV. 

SUBRANG 4. DOSODIC. TONALOSE. 

Q 13.3 di 4.5 Hac. de Chuquipoyo, A. Schwager. Giimbel, Andesite. In W. T., or 13.9 ·hy 6.6 Chimborazo, Sb. Miinch. Ak., p. 239. ab 32.0 mt 4.4 an 22.2 hm2.7 Ecuador. - 1881, p. 348. No. 77, tonalR. T. 1884, p. LXX. ose. 

Q 13.1 di 0.4 Vildartbal, von John? Teller and von John, Quartz- or 7.8 hy15.~ Tyrol. Jb. Wien. G. R-A., no rite. ab33.0 mt 3.5 an24. 7 XXXII, p. 653, 1882. 

R. T. 1884, p. xxvm. 

Q 11.5 di 6.0 Lienz, von John. Stache and von John, Porphyrite. or 12.2 hy13. 3 Tyrol. Jb. Wien. G. R-A., ab27.8 mt 2.1 an26.4 XXIX, p. 400, 1879. 

R. T. 1884, p. XXXII. 

Q 12.5 di 1.8 Tinnebach, von John? Teller and von John, Norite- or 11.1 hy15.4 Tyrol. Jh. Wien. G. R-A.,- porphyry. ab23.6 mt 8.6 an27.5 XXXII, p. 653, 1882. 

R. T. 1884, p. XXVIII. 

Q 10.2 di 7. 7 Hajto, C. Doelter. C. Doeltcr, Dacite. Near an dose. or 8.3 hy 6.4 n. Nagyag, T. M.P. M., 1873, p.95. ab33.0 mt 4.9 

an27.8 Siebenbiirgen. R. T. 1879, p. LXIV. 

SUBRANG 4,5. PRESODIC. BANDOSE. 

so. trace Q 11.3 di 16.9 Portafiuela, H. Ziegenspeck. H. Ziegenspeck, Basalt. In W. T., p. Cl trace or 3.3 wo 0.8 Y ate Volcano, In. Diss., Jena., 1883, 249, No. 14, ab20. 4 mtll. 5 an34.2 Patagonia. p; 29. bandose. 

R. T. 1884, p. LXXIV. 

Q 15.8 di 15.6 Stransko, Werther. ·werther, Melaphyre. Of. No.9, or 3.3 hy 3.6 n. Liebstadt, Jb. Pr. Chern., XCI, an dose. ab 23.1 mtl1.1 lill27.8 Bohemia. p. 330, 1864. 

R. T. 1869, p. LXXVll!. 

Q 22.0 di 7.3 St. Egidi, Niedzwiedki. Niedzwiedki, Pitchstone. or 4.5 hy 5.7 Sty ria. T . .i\'I. P. M., 1872, ab25. 7 mt 6.0 an27.0 p. 255. 

R. T. 1873, p. XLVIII. 

Q 13.3 di 19.3 Suldenferner, von John. 

I 

Staehc and von John, Diorite- or 5.6 by 3.1 Tyrol. .Tb. Wien. G. R-A., porphyry. ab 19.9 mt 3.3 an35.6 l XXIX, p. 341, 1879. 

R. T. 1884, p. XXX. 
44 SUPERIOR ANALYSE8 OF IGNEOUS ROCKS. 

CLASS II. DOSALANE-Continued. 

RANG 1. PERALKALIC. Ul\IPTEKASE. 

·---

I I 

No. Si02 AI,O, Fe,03 FeO MgO CaO Na20 Sp.gr., I K,O H 20 002 TiO, P,05 MnO Snm 

--- --- ··---------

1 61.86 16.58 2.17 6.39 0.54 0.28 4.98 5.34 1. 95 0.30 0.10 0.11 trace 100.72 2. 701 

A2. II 1.031 .162 .014 .089 .014 .005 . 081 .056 .001 . 001 -

-

· RANG 1. PERALKALIC. UMPTEKASE. 

n 

r 

1 63.6H 15.03 2.51 2.41 0.80 3.30 6.54 2.46 2.23 trace 0.55 99.52 2.55 

A 3. III 1. 062 .147 .015 . 033 .020 .059 .105 .026 - .008 15° 

RANG 2. DOMALKALiC. l\IONZONASE. 

1 52.14 15.37 6.83 3.35 6.62 6.54 3.38 4:43 2. 15 100. 81 

AS. III .869 .150 .043 :047 .166 .117 .055 . 047 

2 57.73 17.85 4.44 3.90 1.77 3.65 3. 77 7.65 0.09 trace 100.85 2.61 

A3. III . 962 .175 .028 .054 . 044 . 065 . 061 . 082 -

RANG 2. DOMALKALTC. MONZON AS E. 

1 59.62 18.81 2.03 2.99 1. 92 5. 13 5.65 2.68 1. 04 99.84 

A3. III . 994 .183 .013 .042 .048 .091 . 091 .029 

2 57.89 16.82 5.61 2.83 3.51 3.01 5.87 2.96 1. 38 0 . .57 0.14 100.59 2. 779 

A2. II . 965 .165 .035 .039 . 088 .054 .095 . 032 . 007 .002 

3 51.42 16.52 6.64 4.42 4.62 6.48 4. 72 3.46 1. 82 0.64 100.74 2.722 

A2. II . 857 .162 .042 .061 .116 .116 .076 .037 . 008 

4 52.85 13. 70 6.91 7.32 2.88 7.00 4.23 2.74 1. 98 99.61 2.796 

A3. III . 88i .134 .043 .102 .072 .125 .068 .029 -

5 56.02 16.52 5.02 5.51 4.67 4.20 5.83 1. 66 0.47 0.36 100.26 

A3. III . 934 .162 .031 .076 .117 .075 . 093 . 018 .005 

RANG 3. ALKALI CALCIC. ANDASE. 

1 56.51 19.61 5.10 0.98 2.66 7.89 3.12 3.67 0.40 0.11 100.05 2.50 I A3. III . 942 .192 .032 .OH .067 .141 .OliO .039 .002 

2 52.08 15.60 5.75 2.57 8.40 6.52 2.92 3.80 2.24 99.88 

A3. III .868 .153 .036 . 036 .210 .116 .047 .040 

3 54.65 15. 72 2.00 6.26 5.91 7.83 2.90 3. 79 1. 90 trace trace 100.96 2.864 

A3. III . 911 .154 .013 .087 .148 .139 .047 .040 
DOSALANE-,SHOSHONOSE. 45 

ORDER 5. PERFELIO. GERMANARE. 

SUBRANG 3. SODIPOTASSIC. ILMENOSE. 

Inclusive. I Norm. Locality. Analyst. Reference. Author's name. Remarks. 

so, 0.12 Q 6.6 hy11. 3 Ortberg, Jacobs. K. A. Lossen, Keratophyre. or 31.1 mt 3.3 n. Elbingerode, Sb. Ges. Nat. Fr., 1883, ab42.4 

an 1.4 Harz Mountains. p. 178. c 2. 0 R. T. 1884, p. XXII. 

RANG 4. DOSODIC. UMPTEKOSE. 

I I 

so, trace Q 9.8 di 9.4 Y ate Volcano, H. Ziegen- H. Ziegenspeek, ! Andesite. In W. T., p. Cl trace or 14.5 mt 3.5 Cu Patagonia. speck. In. Diss., Jena., 1883, I 253, No.4, trace ab 55. u an 4.4 p. 42. I umptekose 

R. T. 1884, p. LXXII. near pan tel0 ·I lerose and 

I , . kallerudose. 

I ' I . SUBRANG 3 .. · SODIPOTASSIC. "IONZONOSE. 

~ 

or 26. 1 di 14.9 Wehling, Nietzsche. Beneke and Cohen, Syenite. ab 25.2 ol 7. 2 n. Heidelberg, Geog. Besch. Hei- an 13.3 mt10.0 

ne 2.0 Rhenish Prussia. delb., 1879, p. 93. 

R. T. 1879, p. XXIV. 

I or 45.6 di 7.6 L' Arso; C. W. C. Fuehs. C. W. C. Fuchs, Trachyte. Of. No. 40, ab 26.2 ol 3.0 Ischia. T. l\1. P.M., 1872. monzonose, an 8.9 mt 6.a 

nc 3.1 p. 230. W. T., p. 259. 

R. T. 1873, p. XXXVIII. 

SUBRANG 4. DOSODIC. AKEROSE. 

Q 2.6 di 6.4 Busholm, Tornebolun. Hummel and Erdmann, Granite. or 16.1 hy 5.5 Sweden. Sv. G. Und., XXXIV, ab47. 7 mt 3. 0 an 17.5 p. 27, 1870. 

R. T. 1873, p. x. 

Q 1.4 di 3.5) Barr-Andlau, Unger. H. Rosenbusch, Segregation in Cf. No.2, or 17.8 hi' 7 2 Vogesen. Steig. Schiefer., 1877, granite. amiatus. nb 49.8 m:t 1:4 1 

an 10.6 il 1.1 p. 154. 

hm0.5; . R. T. 1879, p. XIV. 

or 20.6 di 14.6 Hopfenherg, Mi.ihl. Mi)hl, Basalt. nb 28.8 ol 4. 4 n. Schwarzenfels, N. J., 1874, p. 906, an 13.6 mt 9.7 

ne 5. 9 il 1. 2 Rhi.ingebirge. R. T. 1879, p. LXXII. 

Q 0. 4 di 20.4 Suldenferner, von John. Stache and von John, I Ortlerite. or.l6.1· hy 4.8 Monte Cevedale, Jb.Wien. G. R-A., ltb35. 6 mt10.0 an10. 3 Tyrol. XXIX, p. 368, 1879. 

R. T. 1884, p. XXXII. 

or 10.0 di 5.3 Taal Volcano, K. Ocbbeke. K. Oebbeke, Augite- ab 48.7 hyl0.8 Luzon, N. J. B. B. I., andesite. an 14.2 ol 3.1 mt 7. 2 Philippines. 

.I 

p. 482, 1881. 

R. T. 1884, p. LXX. 

SUBRANG 3. SODIPOTASSIC. SHOSHONOSE. 

Li20 tface 'Q 5.8 di 8;2 Truckee Canyon, R. W. Wood- C. King, Trachyte. or 21.7 hy 2.9 Purple Hills, ward. G. E:q)l. 40th Par., ab 26.2 mt 3. 3 

an 28.6 hm2.9 Nevada. II, p. 833, 1877. 

R. T. 1879, p. LVIII. 

. or 22.2 di 10.8 "rest Aston, S. Haughton . S. Haughton, Greenstone Cf. No. 1, abU.6 h)' 6.8 County Wieklow, Tr. R Jr. Ac., XXIII, (diorite). harzose. an 18.4 ol 6. 4 mt 8. 3 Ireland. p. 619, ] 859. 

R. T. 1869, p. LXIV. 

Cl trace or 22.2 di 16.3 Hohne, Keibel. Keibel, Diorite 

s trace ltbz,t.6 hj' 8.0 Harz Mountains. Z. D. G. G., IX, (syenite). anl8.6 ol 6. 3 mt 3.0 p. 575, 1857. 

I R. T. 1869, p. LVIII. 

I 
46 SUPERIOR .ANALYSES OF IGNEOUS ROOKS. 

CLASS II. DOS.ALANE-Continued. 

RANG 3. ALKALICALCIC. ANDASE-Continued. 

4 

No. 

----.----,--------,-----,---,------.....,----,- ----,-------;,------,- --.....,.----,-----,----- ----,---, 

1

_s_i_o_, _ .Al,03 ~~e,~ FeO MgO I cao __ 1 __ N_a_,o __ 1 __ K_,_o_ 

53. 73 18.221 5. 83 6.32 1. 68 

HO co, • 2 MnO Sum 

. ------1----1---1----1---

Sp.gr . 

1. 62 7. 00 2.76 2.83 99.99 2. 765 I 

A3. III .R96 .178 .036 .088 .041 .125 .045 .030 

A3. III 

48.95 14. 80 8. 42 10. 23 

.816 .145 .053 .142 

2, 08 I 7, 40 3.23 2. 97 1. 76 99. 84 2. s32 I . 052 .1S2 . 052 .032 

6 55.35 17.51 3.39 7.61 1. 45 6. 36 3.51 3. 45 l. 82 100. 45 2. 794 

A3. III . 923 .172 .021 .106 .036 .114 .056 .037 

7 54.48 19.44 1. so 4.90 3. 72 7.08 3.58 3. 32 1. 70 100.02 

AS. III .908 .190 .on .068 .093 .127 .058 .035 

I 

RANG 3. ALKALICALCIC. ANDASE. 

1 56.19 16.12 4.92 4.43 4.60 7.00 2.96 2.37 1. 03 0.27 trace 99.91 2.742 

A3. III .937 .158 .031 .061 .115 .125 .048 .025 .002 -

2 49.04 18.11 2.71 7. 70 4. 72 7.11 4.22 2. 11 1. 29 2.46 99.42 2.80 

B2. III .817 .177 .017 .107 .118 .127 .068 .022 .031 

/ --

3 54.52 19.10 2.83 5.89 3.92 7.25 3. 73 2.30 0.59 trace 100.13 2.6-

' A3. III . 909 .187 .018 .082 .098 .130 .060 .024 -- 2. 7 

4 53.94 17.05 2.93 7.15 4.67 7.41 3.45 2. 19 1.10 trace 99.89 2.6-

A3. III .899 .167 .018 .099 .117 .132 .056 .023 - 2. 7 

5 58.451 17.08 0. 76 4.61 5.15 7.60 4.25 1.02 trace trace 90.99 2.94 

A3. III . 974 .167 .005 . 064 .129 .136 .069 .011 -. -

6 54.89 15.16 3.05 5.08 5.79 7.94 3.24 2.32 1. 80 99.27 

B3. IV . 915 .148 .019 .071 .145 .142 . 0[;2 . 024 

7 54.68 15.52 2. 70 5.32 4.22 9.82 3.27 2. 1:3 1. 94 99.60 

A3. III . 911 .152 •. 017 . 074 .106 ,175 .053 .022 

I 

8 55. 10 15. 72 3. 2:) 5.40 6.48 7. 73 3.19 I 

1. 20 i 1. 45 0.50 trace 100.00 

A3. III . 918 .154 .0~0 .075 .162 .13R .052 . 013 -

9 51.69 15. 72 3.25 6. 80 4.85 9.38 3.90 1. 05 1. 42 0.87 1. 51 traee 100.44 2.931 

A3. III .862 . 154 .020 . 094 .121 .168 . 063 .011 ,019 15° 

10 53.18 18.43 6.4u 3.46 4.55 6.85 3.05 2.56 1. 98 trace 100.52 2.842 

A3. III . 886 .180 . 040 . 048 .114 .122 .049 .028 

11 61.80 16. 70 3.28 3.89 1. 87 6.60 3.97 2. 081 0. 09 100.28 2.764 

A3. III 1. 030 .162 . 021 .051 .047 .118 .079 .0'22 
DOSA.LANE-A.NDOSE. 47 

ORDER 5. PERFELIC. GERMANARE-Continued. 

SUBRANG. SODIPOTASSTC. SHOSHONOSE-Continued. 

Inclusive. Norm. Locality. Analyst. I Reference. Author's name. Remarks. 

-

Q 7.4 di 5.1 Plimabach, von John. Stache and von John, Ortlerite. or 16.7 by 8.4 Monte Cevedale, Jb. Wien. G. R-A., ab23.6 mt 8.4 an 28.6 Tyrol. XXIX, p. 371, 1879. 

R. T. 1884, p. XXXII. 

or 17.8 di 16.8 Gratspitze, von John. Staehe and von John, Ortlerite. ab 27.3 ~{ ~:~ :Monte Cevedale, Jb. Wien. G. R-A., unli. 0 mt12. 3 Tyrol. XXIX, p. 362, 1879. 

I R. T. 1884, p. XXXII. 

I 

Q 3.1 di 9.3 S. of Zehnerkopf, von John. Staehc and von John, Proterobase. or 20.6 hylO. 6 Wildkaar, Jb. Wien. G. R-A., ab29.3 mt 4.9 

an 2'2. 0 Tyrol. XXVII, Ito 227, 1877. 

R. T. 1879, p.· XLIV. 

or 19.5 di 6.8 Limansua, K. Oebbeke K. Oebbeke, Hornblende- Near andose. ab 30.4 hy 8.2 Island Leyte, N. J. B. B., I, andesite. an27.0 ol 3. 9 ? 

mt 2.6 Philippines. p. 461' 1881. 

R. T. 1884, p. LXVIII. 

SUBRANG 4. DOSODIC. ANDOSE. 

Cl 0.02 Q 8.6 di 9.0 Buffalo Peak, W. F. Hille- \V. Cross, Andesite. In W. T., p. 277, or 13.9 hyll.O Colorado. brand. A. J. S., XXV, No.35,andose. ttb25.2 mt 7.2 an'23.6 p. 142, 1883. 

R. T. 1884, P· LXXII. 

or 12.2 di 9.1 Buffalo Peak, R. W. Wood- C. King, Basalt. ab 24.6 ol 11.1 North 1'ark, ward. G. Expl.,40thpar., II, ttn29.9 mt 3.9 nc 3.1 il 4.7 Colorado. p. 126, 1877. 

R. T. 1879, P· LXXIV. 

Q 1.0 di 6. 2 Diabase Hills, R. W. Wood- C. King, Diabase. or 13.3 hy14. 3 Truckee Range, ward. G. Expl.,40th par., II, ab 31.4 mt 4.2 an28. 6 Nevada. p. 574, 1877. 

R. T. 1879, p. XLII. 

Q 0. 4 di 10.1 Diabase Hills, R. W. Wood- C. King, Basalt. or 12.8 hy17.4 Truckee Range ward. G. Expl.,40thpar., II, ab 29.3 mt 4.2 an 24.5 Nevada. p. 812, 1877. 

R. T. 1879, P· J:XXIV. 

Q 5.0 di 11.1 Pen J\'Laen Maw1 Phillips. Phillips, Diorite. or 6.1 hy15. 3 Wales. Q. J. G. S., XXXIII, ab R6. 2 mt 1.2 an24. 2 p. 424, 1877. 

R.'T. 1879, p. XXXIV. 

Q 2.8 di 15.7 Langviksuiis, Tornebohm.. Tornebohm, Diorite. or 13.3 hy13.8 Animskogssocken, Sv.G.Und.,XXXIV, ab 27.3 mt 4.4 an20.0 Sweden. p. 31, 1870. 

R. T. 1873, p. XVIII. 

Q 2.8 di 22.2 N. of Myran, Tornebohm. Tornebohm, Diorite. or 12.2 hy 7.3 Animskogssocken, Sv.G. Und., XXXIV, ub 27.8 mt 3.9 an 21.4 Sweden. p. 31, 1870. 

R. T. 1873, P· XVIII. 

Li20 trace Q 50.4 di 11.0 Bet. Konken and Laspeyres. Laspeyres, Melaphyre. Rb20 trace or 7. 2 hy18.1 Herchweiler, Vh. Nh. Ver. Bonn., Cs,O <:race ab27.3 mt 4.6 - an24. 7 Palatinate. X, p. 381, 1883. 

R. T. 1884, p. XLVI. 

or 6.1 di 20.0 Dietesheim, Hornstein. Hornstein, Anamesite~ Near ilb33.0 hy 8.3 M.ainthal. Z. D. G. G., XIX, cam ptonose. an 22.2 ol 0.1 mt 4.6 p. 341,1867. il 2. 9 R. T. 1869, p. CXXXII. 

Q 4.6 di 4.2 Stransko, Mikula. G. Tschermak, lVIelaphyre. Of. No.1, or 15.6 hy}0.5 n. Liebstadl, Vh. Wien. G. R-A., ban dose. llb25. 7 mt 9.3 an28.6 Bohemia. 1867, p. 52. 

R. T. 1869, p. J,XXVIII. 

Q 10.0 di 13.1 Suldenferner, von John. Stache and von Jolin, Quartz- Near · harzose, or 12.2 hy 2.4 Monte Cevedale, Jb. Wien. G. R-A., porphyrite. tonalose, and ab 41.4 mt 4. 9 an 17.0 -Tyrol. XXIX, p. 403, 1879. shoshonose. 

R. T. 1884, p. XXXI\'. 
48 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

CLASS II. DOSALANE-Continued. 

RANG 3. ALKALICALCIC. ANDASE-Continued. 

No. SiO, Al,03 Fe20 3 FeO MgO CaO Na20 K20 H,O co, TiO, P,05 MnO Sum Sp.gr. 

--- -- --------

12 55.1.5 17.92 2.82 3.82 2.S6 11.30 3.25 1. 28 2.49 100.89 2. 731 

A3. III . 919 .175 . 018 ' .053 .072 .202 .053 .014 

13 55.05 17. 16 5. 19 5.01 2.47 8.30 3. 79 2.84 1. 23 101.04 2.764 

B3.IV .918 .1ti8 .033 .069 .062 .148 .061 .030 

14 54.90 16.32 ().52 5.81 1. 66 6. 80 3.87 1. 61 2.47 99.86 2. 7.75 

A3.III ·?15 .160 .041 .081 • . 042 .121 .063 .017 

; 

15 57.t;5 17.32 4.38 5.19 2.97 7.08 4.02 1. 23 0.98 101.02 2. 706 

BS.IV . 964 .170 . 028 .072 .074 .127 .065 .013 

, '' 

16 55.80 17.20 5.22 7. 13 2. 76 6.97 3.62 1. 23 1. 23 101.16 

B3.IV .930 '169 '033 .099 '069 .1~5 .058 '013 

17 55. 18 16.80 l. 93 10.37 2.62 6.90 3.20 2.42 1. 63 101. 05 2.818 

B3.IV '920 .165 .012 '144 .066 .123 .052 .026 ~_/ 

18 54.55 15. 1.5 4.62 10.42 2.93 6.06 4.25 1. 20 ].97 101. 15 2.828 

l13.IV '909 .148 '029 ,144 '073 '108 . 069 .013 

19 ·51. 75 18.96 2.34 10.42 3.25 6.84 3.45 1.93 1.23 100. 17 2.837 

A3, III '863 .186 . 014 ,144 .081 .122 .056 .021 

20 48.18 18.86 2.27 6.22 8.46 9.95 3.88 1. 23 0.45 trace 0.37 trace 99.87 2.954 

A3. III .803 .185 .014 .086 .212 '178 . 063 .013 - .003 -

21 49.27 18.54 6.98 5.62 3. 76 10.38 3.45 2.22 -- 100.36 2.738 

A3. III .821 .182 .044 .078 '094 .186 . 056 .023 I 

22 49.24 19. OG 1.77 lCi. 33 5.00 8. 75 3.89 1.19 0.63 99.86 

A3 ITT . 821 .186 ,Oil '143 .125 '151; ,063 .013 

23 58.42 17.64 5.•66 4.00 2.54 4.50 4.44 2.52 0.42 o.m 0.48 100.93 

J 

n 2. III . 974 '173 .036 . 05ti .064 .080 '072 ,027 '004 '007 

2 '4 54.62 16.96 -! . .50 4.27 .5.20 8.56 3.26 1. so 0. 73 trace . 03.5 100.25 

A 3. III .910 . 166 '028 '060 '130 '153 .053 . 019 - .005 

2 .5 53.39 15.23 8. 73 3. 61 4, 12 8.46 3.60 1. 84 1. 14 0.22 0. 16 100.66 2.814 

A2. n .890 .H9 '054 .OiiO '103 '151 .05~ ,020 .001 
DOSALANE-ANDOSE. 49 

ORDER 5. PERFELIC. GERMANARE-Continued. 

SUBRANG 4. DOSODIC. ANDOSE-Continued. 

Inclusive. Norm. Locality. Analyst. Reference. Author's name. Remarks. 

Q 6.0 di 21.3 Suldenferm;r, .von J9hn. Stache and von John, Suldenite. or 7.8 hy 1.4 Monte Cevedale, Jb. Wien. G. R-A., ab 27.8 mt 4.2 an 30.0 Tyrol. XXIX, p. 395, 1879. 

- R. T. 1884, p. XXXIV. 

Q 2.9 di 16.0 Near Schaubach, von John. Stache and von John, Suldenite. or 16.7 hy 3.2 Monte Cevedale, Jb. Wien. G. R-A., ab32.0 mt 7.7 an21.4 Tyrol. XXIX, p. 395, 1879. 

R. T. 1884, p. XXXIV. 

Q 9.1 di 9.5 Suldenferner, von John. Stache and von John, Suldenite. Near tonalose. or 9.5 hy 4. 7 Monte Cevedale, Jb. Wien. G. R-A., ab33.0 .mt 9.5 an22.2 Tyrol. XXIX, p. 395, 1879. 

R. T. 1884, p. XXXII. 

Q 9.5 di 8.0 PradacCio, von John. Stache and von John, Diorite. Near tonalose. or 7.2 hy 9.3 Valforno, Tyrol. Jb. Wien. G. R-A., ab 34.1 mt 6.5 an 25.6 XXIX, p. 341, 1879. 

R. T. 1884, p. XXX. 

Q 8.6 di 6.3 Tinnebach, Tyrol. von John. Teller and von John, Enstatite- or 7.2 hy12.8 Jb. Wien. G. R-A., no rite. ab 30.4 mt 7.7 an27. 2 XXXII,p.653, 1882. 

R. T. 1884, p. XXVIII. 

Q 2. 6 di 8. 6 Zehner Kopf, von John. Stache and von John, Labradorite- or 14.5 hy19. 7 Wild Kaar, Tyrol. Jb. Wien. G. R-A., porphyrite. ab 27.3 mt 2.8 an24. 2 XXVII, p. 226, 1877. 

R. T. 1879, p. XLIV. 

Q 3.3 di 9.8 Zehner Kopf, von John. Stache and von John, Labradorite- or 7.2 hy17.5 Wild Kaar, Tyrol. Jb. Wien. G. R-A., porphyrite. ab 36.2 mt 6.7 an18.4 XXVII, p. 227, 1877. 

R. T. 1879, p. XLIV. 

or 11.7 di 3.1 Sobretta, Tyrol. von John. Stache and von John, Labradorite- ab 29.3 hy13.8 .Tb. Wien. G. R-A., porphyrite. an30.3 ol 7.4 mt 3.3 XXVII, p. 226,1877. 

R. T. 1879, P· XLIV. 

NiO trace or 7.2 di 13.2 Mosso, n. Biella, Cossa. Cossa, Olivine- Cu trace ab20.4 ol 17.6 Piedmont. Ricerche Chern. e diabase. an30.3 mt 3.3 ne 6.8 ap 0.9 Micros. 1881, p. 63. 

R. T. 1884, p. XLII. 

Cl 0.14 or 12.8 di 18.6 Lava of Jan. 30, 1865. C. W. C. Fuchs. C. W. C. Fuchs,- Dolerite 

ab22.5 ol 3.6 Lingua Grossa, N. J., 1865, p. 713. an28.6 mt 10.2 ne 3. 7 Mount Etna. R/f. 1869, p. CXXVIII. 

or 7.2 di 10.7 Ferdinandea Island, H. Forstner. H. Forstner, Basalt. In W. T., p. 283, 

ab26.2 ol 18.3 Mediterranean. T. M. P. 1\'l., XV, No. 94, an dose. an30.6 mt 2.6 ne 3.7 p. 391, 1883. 

R. T. 1884, p. LXXVI. 

Q 8.6 \H 0.9 Taal Volcano, K. Oebbeke. K. Oebbeke, Andesite. or 15.0 hy 8.1 Luzon, Philippines. N. J., B, B., I, p. 481, ab37. 7 mt 8.4 an2l.1 il 0. 6 1881. 

R. T. 1884, p. LXX. 

Q 3.5 di 13.1 Sierra de. Mari veles, K. Oebbeke. K. Oebbeke, Andesite. or 10.6 hy 10.9 Luzon, Philippines. N.J., B. B., I, p. 471, ab 27.8 mt 6.5 an26.1 1881. 

R. T. 1884, p. LXX. 

!eS, 0.16 Q 5.8 di 17.3 Snow River, A. W. Howitt. A. W. Howitt, Diabase- or 11.1 hy 2.3 North Gippsland, N. J., 1882, I, p. 416. porphyrite. ab30.4 mt 11.6 anl9. 7 hm 0.9 Victoria. R. T. 1884, p. XL. 

. 6623-No. 28-04--4 
50 SUPERIOR ANALYSES OF IGNEOUS ROOKS. 

CLASS II. DOSALANE-Continued. 

RANG 3. ALKALICALCIC. ANDASE-Continued. 

No. Si02 Al20 3 Fe20 3 FeO MgO CaO Na20 K,O H.o co, TiO, · P20 5 MnO Sum Sp.gr. 

---------- 1 49.97 17.01 0.86 5.94 7.75 6.39 5.14 .077 5.08 0.03 0.32 . 045 0.10 

Al. I .833 .167 .006 .082 .194 .114 .083 .008 .004 .003 . 001 

2 54.14 13.12 7.20 4. 72 5.94 7.34 3.82 0.57 2. 78 0.88 trace traee 100.51 2.578 

A2. II . 902 .128 .045 .065 .149 .131 .061 .006 .. 011 - -

RANG 4. DOCALCIC. HESSASE. ' 

1 52.95 19.25 4.57 4.69 4.12 9.12 2.09 2.42 0. 71 0.34 100.26 2.875 

AS. III .883 .190 .029 .065 .103 .163 .034 .025 

RANG 4. DOCALCIC. HESSASE. 

1 47.54 19.52 4.24 6.95 6.66 11.70 3.09 0.16 -- 0.18 0.18 100.22 

A2. II . 792 .191 .026 .097 .167 .209 .050 .002 ·.002 .003 

2 54.80 17.58 0.97 8.84 4.47 8.22 3.14 1. 16 0.94 trace 100. 12 2.50 

A3. III .913 .172 .006 .123 .112 .146 .051 .012 -

~ 

3 50.08 18.84 7.05 1. 03 6.57 12.37 2.39 0.57 0.80 0.88 100.58 

A3. III .835 .184 .044 .014 .164 .221 .039 . 006 .013 

4 48.88 18.85 2.13 6.62 6.45 11.46 2.93 0.70 2.54 100.561 

A3. III .815 .185 .013 .092 .161 .205 .047 .007 

5 53.00 17.19 4.78 5.05 4.66 8.08 2.92 1. 49 1. 35 0.57 0.37 trace I 99.46 2.856 

A2. II .883 .169 .030 .070 .117 . 145 .047 .016 .007 .003 -

6 43.19 18.69 7.94 6.07 4.98 9.93 3.50 1. 15 1. 94 0.23 0.90 0.47 1.72 100.71 3.092 

B2. III . 720 .183 .050 .08.5 .125 .177 .056 . 012 .011 .003 . 024 -

7 53.65 20.77 0.98 7.61 1. 57 9. 16 3.33 1. 61 ]. 33 100.01 2.82 

A3. III .894 .203 .006 .106 . 039 .164 .054 .017 .no 

8 46.71 22.23 0.79 5.46 10.30 11.69 1. 70 0.15 1.15 100.18 3.017 

A3. III . 779 . 218 .005 .076 .258 .209 .027 .002 

CLASS II. DOSALANE. 

RANG 1. PERALKALIC. LAURDALASE. 

--

1 54.52 13.37 0.61 3.52 6.37 4.38 1. 60 10. 7::l 2. 76 1. 82 99.58 

A 3. III . 909 .131 .004 .049 .159 . 079 . 0~6 .114 

' 
DOSALANE-· HESSOSE. 51 

ORDER 5. PERFELIC. GERMAN ARE-Continued. 

SUBRANG 5. PERSODIC. BEERBACHOSE. 

- -- --

Inclusive. Norm. Locality. Analyst. Reference. Author's name. Remarks. 

Cl 0.03 or 4. 5 di 8.5 Norheim Tunnel, Laspeyres. Laspeyres, Gabbro. F 0.10 ab 36.2 ol 17.9 Nahethal, Z. D. G. G., XIX, s 0.12 an 21.1 mt 1.4 CuO 0.12 ne 4.0 il 0.6 Rhenish Prussia. p. 855, 1867. BaO 0.06 ap 1.0 R. T. 1869, p. LXX. Li,O 0.02 

Q 8. 9 di 15.3 Siisebuhl, Mohl, Mohl, Tachylyte. Near hessose. or 3.3 hy 9.2 n. Drausfeld, N.J., 1874, p. 906. ab 32.0 mt 10.4 an 17.0 il 1.7 Hanover. R. T. 1879, p. LXXIV. 

SUBRANG 3. SODIPOTASSIC. 

Q 5.8 dl 7. 2 Monte Mulatto, Szameit. G. Tschermak, Melaphyre. Al20 3 high? or 13.9 hy 11.6 Predazzo, Tyrol. Porphyrgest. Oester., MgO low? ab 17.8 mt 6. 7 an36.4 1867, p. 127. 

R. T. 1869, p. LXXVIII. 

SUBRANG 4,5. PRESODIC. HESSOi:>E. 

I or 1.1 di 15.8 Cascade Mountains, Jannasch. J annasch and Kloos, Dolerite. ab23.6 ol, 13.2 Oregon. T. M.P. M., 1881, an38.6 mt 6.0 ne 1.4 il 0.3 p. 102, 

R. T. 1884, p. LXXIV. 

Q 3.1 di 8. 6 Ombe Mountains, R. w. Wood- C. King, Basalt. Near andose. or 6. 7 hy 23.3 Nevada. ward. G. Expl. 40th Par., ab2~7 mt 1.4 an3 .3 u, p. 500, 1877: 

R. T. 1879, p. LXXIV. 

Q 2. 5 di 17.7 Doonane Hill, S. Haughton. S. Haughton, Trap (diorite). Iron oxides? or 3. 3 hy 8.2 County Donegal, Tr. R. Ir. Ac., ab 20.4 rut 3. 3 an38.6 hm 4.8 Ireland. XXIV, p. 28, 1866, 

R. T. 1869, p. LXIV. 

or 3. 9 di 16.8 N. of Sorskogen, Tornebohm. Tornebohm, Diorite. ab24.6 hy 13.4 Animskogssocken, Sv. G. Und., XXXIV, an36.4 rut 3.0 Sweden. p. 31, 1870, 

R. T. 1873, p. XVIII. 

Q 6.8 di 6.5 Sch warzen berg, L. von W erveke. H. Rosenbusch, Quartz-diorite. Near andose. or 8.9 hy 13.0 Vogesen. Steiger Schiefer., ab24. 6 rut 7.0 an 29.5 il 1.1 1877, p. 334, ap 0.9 R. T. 1879, p. XXX. 

or 6. 7 di 11.5 Colonat Hervel, vond.l\'[ark. von d. Mark, . Basalt. MnO high.· ab 19.9 ol . 7.3 Kr. Altena, Vh. Nh: Ver. Rheinl., an32.0 mt 11.6 ne 5.1 il 1. 7 Westphalia. XXXV, p. 257,1878, ap l.tl R. T. 1879, p. LXXIV. 

Q 2.0 di 7.6 1'orfhaus, Streng. Streng, Gabbro. or 9.5 hy 13.2 u. Baste, N. J., 1862, p. 963, ab 28.3 mt 1. 4 an36. 7 Harz Mountains. R. T. 1869, p. LXX. 

or 1.1 di 4.5 Langenlois, Beauregard. Beauregard, Forellenstein. ab 14.2 hy 6.~ Lower Austria. T. M. P. M., 1878, an52.5 ol 18.8 mt 1.2 p. 369, 

R. T. 1879, p. XXXVIII. 

ORDER 6. LENDOFELIC. NORGARE. 

SUBRANG,l. PERPOTASSIC. 

Li,O trace or 49.5 ac 1.9 Point of Rocks, R. w. Wood- C. King, Leucitite. Near wyoming· lc 10.9 ns 0. 9 Lcucite Hills, ward. G. Expl. 40th Par., ose; cf. No.1, ne 4.3 di17.7 

ol 10.0 Wyoming. n, p. 237, 1877, wyomingose, 

R. T. 1879, p. LX. W.T. p.339. 
52 SUPERIOR .ANALYSES OF IGNEOUS ROOKS. 

CLASS II. DOS.ALANE-Continued. 

RANG 3. ALKALICALCIC. 

No. Si02 Al20s Fe20 8 FeO MgO CaO Na,O K,O H 20 co, TiO, P,05 MnO Sum Sp.gr. 

----------------

1 48.68 18.74 2.67 7.18 3.04 10.24 2.47 6.46 -- 98.65 

A3. III. .811 .183 .017 .100 .076 .183 .040 .069 

RANG 3. ALKALICALCIC. 

~----

1 47.17 18.87 5.31 5.66 3.86 10.30 2.69 6.60 -- I trace 100.461. 

AS. III. 0 786 - ,185 .033 .079 .097 .184 .044 .070 -

I 

CLASS II. DOSALANE. 

RJ\NG 1. PERALKALIC. 

1 48.21 18.33 '4.29 4.64 1. 41 2.77 11.'7 5 5.83 1. 97 0.13 99.47 

AS. III. .804 .180 .027 .064 .035 .050 .19 0 .062 0 002 

I 

CLASS III. . SALFEMANE. 

RANG 1. PERALKALIC. ROCKALLASE. 

1 68.75 5.91 5.81 5 .. 33 0.08 2.11 7.52 4.28 n. d. 1100.02 

A3. III 1.146 .058 .036 0 074 .002 .038 .121 .046 

) 

CLASS III. SALFEMANE. 

RANG 3. A LKALICALCIC. V AALASE. 

1 52.82 12.51 9.07 3.98 4. 74 8.08 2.58 2.44 0. 75 o. 21 1 2.08 0.4fl 99.75 2.86 

A2. II .880 .122 .057 .053 .119 .145 .042 .026 .026 .004 

' 

RANG 3. ALKALI CALCIC. V AALASE. 

1 53.39 12. 18 6.18 6. 70 6.17 6.80 2. 70 1. 76 2.09 0.28 1. 39 0.25 100. 13 

A2. II .890 .119 .039 .093 .154 .121 .044 0 019 .017 .002 

2 52.41 13.04 9.46 8.35 3.50 8.36 3.24 1. 23 1. 26 100.85 

A3. III .874 .128 .059 .116 .088 .149 .052 .013 

-----

RANG 4. DOCALCIC. 

J 

1 49.57 15.56 8.79 4.68 7.09 8. 10 2.18 1. 07 0.68 0. 50 J 2.15 100.37 2. 927' 

A3. III .826 .152 .055 .065 .177 ,145 .035 .012 .027 15° 

I r 
DOSALANE-.-V AALOSE. 53 

ORDER 7. · LENFELIC. ITALARE. 

SUBRANG 2. DOPOTASSIC. 

Inclusive. Norm. Locality. I Analyst. Reference. Author's name. Remarks. 

Cl 0.17 or 17.8 di 25.3 Lava of 1871, Morawski and Morawski and Leucitophyre. Near II. 7. 3. 3. an20.6. ol 4.4 Mount Vesuvius. Schin:1erer. Schinnerer, lc 16.1 mt 3.9 nel1.4 Vh. Wien. G. R-A., 

1872, p. 161. 

R. T. 1873, p. XL. 

SUBRANG 3. SODIPOTASSIC. 

or 10.0 di 25.6 Lava of 1871, Morawski and Morawski and Leucitophyre. Near II. 7. 2. 3. an19. 7 ol 2.4 Mount Vesuvius. Schinnerer. Schinnerer, and II. 7. 3. 2. lc 22.7 mt 7.7 ne 12.5 Vh. Wien. G. R-A., 

1872, p. 161. 

R. T. 1873, p. n. 

ORDER 8. FELDOLENIC. CAMPANARE. 

SUB RANG 4 .. DOSODIC. 

NiO 0.14 or 14.5 ac 12.5 Katzen buckel, .H. Rosen- H. Rosenbusch, Nephelinite- lc 15.7 ns 5.5 Odenwald. busch. Neph. v. Katzenb., porphyry. neSS. 5 di 11.8 ol 4,5 Freibnrg, 1869, p. 61. 

R. T. 1869, p. CVIII. 

ORDER 3. QUARFELIO. ATLANTARE .. 

SUBRANG 2. DOPO'l'ASSIC. 

CuO 0.23 Q 28.0 ac 16·. 6 · Sidori, H. F:.>rstner. H. Forstner, Pantellerite. InW.T., or25.6 ns 8. 5 Fosso del Gallo, ?1. K. , VIII, p. 311. No.1, ab 6.3 di U.4 hy 5.1 Pantelleria. p. 179, 1884. IlL 3. 1. 2. 

R. T. 1884, p. LXVI. 

ORDER 4. QUARDOFELIC. V AALARE. 

SUBRANG ~. SODIPOTASSIC. 

Traces of Q 10.0 di 16.9 Frauen berg, F. K~app. F. Knapp, Dolerite. 

Cu, Co, Ni, As. or14. 5 hy 4.1 Breitfirst, Hesse. Doler. Gest.Frauenb., ab22.0 mt 7.0 an15. 0 il 4.0 I Wiirzburg, 1880, p.15. hm4.3 R. T. 1884, p. LXXII. ap 1.3 

SUBRANG 4. DOSODIC. V AALOSE. 

so, 0.24 Q 8.8 di 14.4 Near Hasserode, Pufahl. K. A. Lossen, Quartz-gabbro. or10.6 hy 13.1 Harz Mountains. z. D. G. G., XXXII, ab23.1 mt 9.1 an15. 6 il 2.6 p. 212, 1880. 

R. T. 1884, p. XXXIV. 

Q 7.6 di 19.5 Lion's Head, W. F. Hille- Cohen, Diabase. Near campton- or 7.2 hy 6.6 Capetown, brand. N. J., 1874, p. 475. ose. Of. Nos. ab27.3 mt13.7 an17.5 Cape Colony. R. T. 1879, p. XLII. 6-8, vaalose, 

W. T., p .. 311. 

SUBRANG 4,5. PRESODIC. 

0 

Q 7.6 di 10.8 Bockenheim, Hornstein. Hornstein, Anamesite. or 6. 7 hy 12.7 Main thai. Z. D. G. G., XIX, ab18.3 mt 8.8 

an26.4 il 4.1 ·p. 315, 1867. . hm 2.7 R. T. 1869, p. cxxxn. 
54 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

CLASS III. SALFEMANE-Continued. 

RANG 2. DOMALKALIC. KILAUASE. 

No. Si02 .Al,03 Fe,03 FeO MgO CaO Na20 K,O H20 co, TiO, P,05 MnO Sum Sp.gr. 

- --- --~ -- -- 1 47.56 12.69 5.26 3.35 10.91 8;38 2 .. 33 3.98 2.16 0.88 0.91 99.75 

A3. III . 793 .124 .033 .047 .273 .150 .037 .043 . 006 

RANG 2. DOMALKALIC. KILAUASE. 

1 

50 '"I 9.14 7.33 7.03 7.22 11.63 3.06 ]. 02 1. 74 0.38 99.37 2.66 

B3. IV .847 . 089 .046 .097 .181 .207 .049 .011 .005 19° 

RANG 2. DOl\IALKALIC. KILAUASE. 

1 49.86 12.75 3.36 11.38 4.39 .8. 71 5.25 0.57 2.56 1. 33 0.58 100.74 

A2. II .831 .125 .021 .158 .no .155 . 085 . 006 .017 .004 

RANG 3. ALKALICALCIC. CAMPTONASE. 

1 52.35 15. 72 2.90 7.32 7.36 8.98 2.81 1. 32 1.35 0.23 0.30 100;64 

A3. III .873 .154 .018 .101 .184 .161 .045 .014 .002 

2 52.00 15.75 3.55 12.84 3.42 7.39 3.37 1. 24 0. 3.'\ 0.11 1. 06 101.08 

B3. IV .867 .154 .022 .178 .086 .132 .055 .014 .008 I 

3 48.60 15. 78 3.22 7.21 10.13 8.34 3. 77 1. 65 1.30 0. 11 99.79 2.81 

AS. III .810 .154 .020 .100 .253 .149 .061 .018 .001 

4 47.53 14.95 6.73 8.04 7. 41 8.50 2.98 1.12 1. 95 trace 0.73 99.94 2.95 

AS. III . 792 .147 .042 .112 .185 .152 .048 .012 - .010 

5 51.56 14.78 5.32 7.01 6.35 8.06 3.27 1. 26 1.10 0.46 1. 25 100.42 2.931 

A3. III .859 .145 .033 . 097 .159 .144 .053 .014 .016 15° 

6 50.93 12.80 4.32 8.08 5.94 8.24 3.28 0.77 1. 65 0.14 3.17 0.75 100.08 2.897 

.005 

(99.51) B2. III .850 .125 .027 .113 .149 .147 .053 .008 .040 

7 50.76 14.50 4.26 6.93 6.75 7.55 2.92 0.85 1. 78 0.20 3.06 0.16 99. 75 

(99.69) A2. II .846 .142 .027 .096 .169 .135 .047 .009 .038 .001 

8 49.35 15.71 7.44 6.96 5.71 9.80 2.96 1. 31 0.49 99. 73 2.98 

A3. III .823 .154 .047 .097 .143 .175 .048 .014 

9 51.41 12.92 2.87 9.29 5.45 11.46 2.92 0.70 0.32 2.61 0.16 100.11 2.69 

AS. III .857 .127 .018 .129 . ~36 .205 .047 .008 .033 .002 170 
SALFE.MANE-CA.M.PTONOSE. 55 

ORDER 5. PERFELIC. GALLARE. 

SUBRAXG 3. SODIPOTASSIC. LA:IIAROSE. 

Inclusive. Norm. Locality. I Analyst. Reference. Author's name. Remarks. 

or 23.9 di 16.5 Libsic, N. of Prague, Plaminek: Boricky, Micaab15. 2 ol 15.2 Bohemia. T. :M.. P. M., 1878, picrophyre. anl2.2 mt 7.7 ne 5.1 ap 3.0 p. 510. 

R. T. 1879, p. XLVI. 

SUBRANG 4. DOSODIC. KILAUOSE. 

Q 1.1 di 39.7 Kilauea, Hawaii. Cohen. Cohen, Basalt (Pele's Of. Nos. 9 and or 6.1 hy 5.8 N.J., 1880, ll, p. 41., hair). 10, kilauose. ab25. 7 mtlO. 7 an8.1 R. T. 1884, p. LXXX. W. T., p. 315. 

SUBRANG 5. PERSODIC. 

or 3. 3 di 25.1 South Staffordshire, Henry. Beete-Jukes, Greenrock. ab 36.7 ol 10.6 England. B. G. Soc. Fr., an 9. 5 mt 4. 9 ne 4.3 il 2. 6 XXIII, p. 121, 1866. ap 1.3 R. T. 1869, P· LXXXII. 

SUBRANG 4. DOSODIC. CAMPTONOSE. 

u,o trace Q 1.3 di 14.9 Little Falls, Streng. Streng, Augite-diorite. Near or 7.8 hy 18.7 Minnesota. N.J., 1877, p. 129. auvergnose. ab23.6 mt 4.2 an26.4 R. T. 1879, p. XXXIV. 

Q 1.3 di 4.7 Richmond, Streng. Streng, Augite-diorite. or 7.8 by 26.8 Minnesota. N. J., 1877, p. 124. ab28. 8 mt 5.1 an23.6 ap 2. 7 R. T. 1879, p. XXXIV. 

or 10.0 di 16.6 Navesink Peak; R. W. Wood- C. King, Nephelite- ab19.9 ol 20.1 Elkhead Mts., ward. G. Expl. 40th Par., I, basalt. an20.9 mt 4.6 ne 6.5 Colorado. p. 676, 1878. 

R. T. 1879, p. LXII. 

or 6, 7 di 14.7 Stichill, Scotland. J. J. H. Teall. J. J. H. Teall, Porphyrite. Not in W. T. 

ab25. 2 hy 6.6 N. J., 1884, I, p. 73. an24. 2 ol 10.5 mt 9. 7 R. T. 1884, p; XLII. 

Q 1.7 di 14.8 Louisa, Mainthal. Hornstein. Hornstein, Anamesite. or 7.8 by 15.1 Z. D. G. G., XIX, ab27.8 mt 7. 7 an21. 7 il 2.4 . p. 325, 1867. 

R. T. 1869, p. cxxxu. 

Cl 0.01 Q 5.7 di 15.0 Buhl, Dietrich. Mohl, Anamesite. Sum given as or 4.5 hy 13.6 n. Weimar, Cassel. Ber. Offenb. Ver. Nk., 99.505. ab 27.8 mt 6.3 an17.8 il 6.1 - 1868, p. 77. ap 1.7 R. T. 1869, p. cxxxu. 

so. 0.03 Q 5.3 di 10.9 Buhl, Dietrich.' Mohl, Anamesite. Sum given as or 5.0 hy 15.8 ab24.6 mt 6.3 n. Weimar, Cassel. Ber. Offenb. Ver. Nk., 99.69. 

an:.!3.9 il 5.8 1868, p. 77. 

R. T. 1869, p. CXXXII, 

or 7.8 di 18.7 Cuddie Monti, Forstner. Forstner, Basalt. Not in W· T. ab25.2 by 9.9 1J:ll25.6 ol 1.4 Pantelleria. T. M. P. M., 1883, mt 10.9 p. 393. 

R. T. 1884, p. LXXVI. 

Q 1.6 di 28.0 Lava of 1843, Cohen. Cohen, Basalt obsidian. Near ornose. or 4.5 hy 10.2 Kilauea, Hawaii. N. J. 1880, ll, p. 41. ab24.6 mt 4.2 an22. 8 il 5.0 R. T. 1884, p. LXXX. 
56 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

:cLASS III. SALFEMANE--cContinued. 

RANG 3.' ALKALI CALCIC. CAMPTONASE-Continued. 

No. SiO, Al,03 Fe20 3 FeO MgO OaO Na,O K,O H,O co, Ti02 P,o. MnO Sum Sp.gr. 

-- --

1 53.81 13.48 3.02 7.39 6.46 10.34 3.23 0.64 0.57 2.01 trace 100.95 2.75 

B2, III .897 .132 .019 .103 .162 .185 .052 .007 .025 170 

2 51.12 10.09 5.35 8.59 9.68 9.72 3.38 0.56 1. 31 -- 99.80 2. 73 

A3. III .852 .099 .034 .119 ·.242 .173 .055 .006 160 

3 50. 74 11.98 3.41 8.11 7.25 12.42 2. 74 0.24 0.52 1. 68 0.54 99.63 2.98 

A2. II 846 .118 .021 .113 .181 0 221 044 .002 .021 0 008 

RANG 4. DOCALCIC. AUVERGNASE. 

1 49.18 13.52 5.52 10.31 6.83 11.51 1. 84 0.06 0.34 0.52 0.13 0.28 100.04 3.016 

A2. II .820 .132 .034 .143 .171 0 205 .030 .001 .007 .001 .004 

2 48.04 13.13 6.89 11.:\.4 5.17 10.87 2.83 0.06 -- 0.39 0.07 0.11 100.72 3.024 

A2. II .801 .129 .043 .• 155 .154 .195 .045 .. 001 .005 .001 .002 

. 3 52.68 14.14 1. 95 9.79 6.38 9.38 2.56 0.87 1. 60 0.44 99.79 . 2.97 

' 

A3. III .878 .137 .013 .136 ,160 0 .168 .042 :oo9 .006 

4 52.42 14.54 1. 25 9.84 7.53 10.59 2.23 0.49 0.55 0.51 99.75 3.00 

AS. III .874 .142 .008 .137 ,188 .189 .035 .005 .007 

5 51.78 14.20 3.59 8.25 7.63 10. 70 2.14 0.39 0.63 0.14 0.44 99:89 3.03 

AS. III .863 .139 .023 .115 ,191 .191 .034 .004 .001 .006 

6 53.13 13.74 1. 08 9.10 8.58 9.47 2.30 1. 03 0.90 0.43 99.76 2.96 

A3. III .886 .135 .007 .126 .215 .170 .037 .on .006 

7 49.67 13.57 7.79 7.21 5.53 12.37 1. 57 I. 20 0.15 1. 50 100.56 2.958 - A3. III .828 .133 .049 .100 .138 .221 .026 .013 .019 

I 

8 49.63 16.18 1. 92 12.03 5.38 9.33 !.89 0.81 0.55 1. 75 0.44 0.30 100.66 3.02 

A1. I .827 .159 .012 .167 .145 .166 .031 .008 .022 .003 .004 16° 

' 

9 47.36 16.79 1. 53. 7.93 6.53 10.08 2.85 0.84 3.05 0.48 0.51 0.26 0.44 100.61 3.081 

A2. II .799 .165 .009 .110 .163 .180 .046 .009 .006 .002 .006 

10 45.93 15.09 1. 87 11.45 14.82 8.92 1. 93 0.22 0.58 100.81 

A3. III .766 .148 .012 .159 -.371 .159 .031 .002 

11 49.87 14.80 8.25 6,88 6.77 9.36 2.81 0.68 0.45 99.87 

A3. III .881 .145 .052 .096 .169 .167 .045 .007 

12 50.75 16.54 2.10 7.88 7.65 11.96 2.13 0.56 0.35 99.92 

A3. III .846 .162 .013 .110 .191 .214 .034 .006 
SALFEMANE-AUVERG NOSE. 57 

ORDER 5. PERFELIC. GALLARE-Continued. 

SUBRANG 5. PERSODIC. ORNOSE. 

Inclusive. Norm: Locality. Analyst. Reference. Author's name. Remarks. 

Q 3.8 di 25.2 Kilauea, Hawaii. Cohen. Cohen, Basalt-obsidian. Near campton- or 3.9 hy11.8 N. J., 1880, II, ose. ab27.3 mt 4.4 an20.3 il 3.8 p. 41. . R. T. 1884, p. LXXX • 

·or 3.3 . di 30.3 Lava of 1868, Coheri. Cohen, Basalt-pumice. ab28.8 hy30.3 MaunaLoa, N.J., 1880, II, av10.6 ol 7.9 mt 7.9 Hawaii. p. 41. 

R. T. 1884, p. LXXX. 

Q 1.5 di 33.5 Lava of April, 1867, von W erveke. Cohen, Basalt-obsidian.· or 1.1 hy11.3 Niuafou, N.J., 1880, II, ab 23.1 mt 4.9 an20.0 il 3.2 Tonga Islands. p. 41. 

R. T. 1884, p. LXXX. 

SUBRANG 4,5. PRESODIC. AUVERGNOSE. 

Cl trace Q 3.3 di 23.7 Brededal, Disco, Nauckhoff. Nauckhoff, Basalt. Cu trace or 0.6 hy18.9 Greenland. T. M. P. M., 1874, ab 15.7 mt 7.9 an28.1 il 1.1 p. 120. 

R. T. 1879, p. LXXIV: 

Cl trace 

~ ·&:~ di 25.5 Ovifak, Greenland. Nauckhoff. Nauckhoff, Basalt. s 0.98 hy14.4 T. M. P. M., 1874, c 0.79 ab 23.6 mtlO.O H? 0.25 ail23.1 il 0.8 p. 121. pr 1.8 R. T. 1879, p. LXXIV. 

Q 2.1 di 18.9 Mount Holyoke, G. W. Hawes. G. ·w. Hawes, Dolerite ( dia- or 5.0 hy22. 9 Massachusetts. A. J. S. (3), IX, base). ab22.0 mt 3.0 an23. 9 p. 186, 1875. 

R. T. 1879, p. XLII. 

Q 1.6 di 19.9 Wintergreen Lake, G. W. Hawes. G. W. Hawes, Dolerite ( dia- or 2.8 hy26.0 New Haven, A. J. S. (3), IX, base). ab 18.3 mt 1.9 an28.4 Connecticut. p. 189, 1875. 

R. T. 1879, p. XLII. 

Q 3.5 di 20.4 West Rock, G. W. Hawes. G. W. Hawes, Dolerite (dia- or 2.2 ny2L4 ab 17.8 rut 5.3 New Haven, A. J. S. (3), IX, ba~e). 

an28.1 Connecticut. p. 186, 1875. 

R. T. 1879, p. XLII. 

Q 0.4 di 18.9 JellBey City, G. W. Hawes. G. W. Hawes, Dolerite (dia- or 6.1 hy28.0 New Jersey. A. J. S. (3), IX, base). ab19.4 rut 1.6 an24. 2 pc 187, 1875. 

R. T. 1879, p. XLII. 

Q 6.5 di 28 .. 2 Thiorsa, Iceland. S. von Walters- S. von W altershausen, Anorthite rock. Mean of several. or 7.2 hy'4.5' hauseri. Abh. Ges. Wiss. Gott., ab 13.6 mt11.4 an26.1 il 2. 9 X, p. 23, 1862. 

R. T. 1869, p. CXXXVI. 

F trace Q 2.3 dl 8.3 Radauthal, Streng. Streng, Gabbro. 

s 0.07 or 4.5 hy27. 9 Harz Mountains. N.J., 1862, p. 966. CroOs 0.38 ab16.2 mt 2.8 

CuO 'trace an33.4 il 3.3 R. T. 1869, p. LXX. 

ap 1.0 

Cl trace or 5.0 di 15.9 Lupbode, Kayser. Ki.'ser, . Diabase. Not fresh. FeS. 1. 96 ab24.1 hy 3.4 Harz Mountains. . D. G. G., XXII, an30. 6 ol 12.9 mt 2.1 p. 159, 1870. 

il 0.9 R. T. 1873, p. XXIV. pr 2.0 

or 1.1 di 9.9 Ottenschlag, Gamroth. Gam roth, Paleopicrite. ab 16.2 hy 2.9 Austria. · T. M. P.M., 1877, an32.0 ol 35.3 mt 2.8 p. 278. 

R. T. 1879, p. XLVI. 

Q 2.8 di 16.5 San. Marco, Forstner.· Forstner, Basalt. Not in W. T. or 3.9 hyl4.8 Pantelleria. T. M. P. M., 1883, ab23.6 mt12.1 an25. 9 p. 393. 

R. T. 1884, p. LXXVI. 

or 3.3 dl 20.9 Kilauea, Hawaii. Allen. J.D. Dana, Basalt (Pele's ab17.8 ~r t~ A. J. S. (3), XVIII, hair). ·an33. 9 mt 3.0 p. 134, 1879. 

R. T. 1884, p. LXXX. 

I 
58 SUPERIOR ANALYSES OF IGNEOUS ROCKS. 

CLASS III. SALFEMANE-Continued. 

RANG 3. ALKALICALCIC. LIMBURGASE. 

No. Si02 Al20 3 Fe20 8 FeO MgO CaO Na20 K20 H20 co. Ti02 P•Os MnO Sum Sp.gr. 

~-- ---- ------ ~--

1 43.60 11.76 7.84 15.38 3.33 10.32 3.42 1. 36 1. 00 0.82 0.23 99.06 2.842 

B2. III • 727 .115 .055 .214 .083 .184 .055 .015 .010 .003 

2 41.01 11.58 12.54 7.60 8.67 12.20 2.57 1. 45 1. 87 0.48 0.75 100.72 3.024 

A2. II .684 .113 .078 .106 .217 .218 .042 .016 .006 .005 

3 41.97 15.83 6.06 8.38 15.81 6.32 2.64 1. 55 1. 08 0.02 0.23 99.89 

A3. III .700 .154 .038 .117 .395 .113 .042 .017 - .003 

-. 

RANG 4. DOCALCIC. 

1 41.33 18.31 8.52 6.10 8.40 11.76 2.34 1.01 1. 63 99.40 

AS. III .689 .179 .053 .085 .210 .210 .038 .011 

.-

, CLASS III. SALFEMANE. 

RANG 1. PERALKALIC. MALIGNASE. 

1 46.97 14.55 8.79 6.02 1. 40 9.46 8.18 3.07 1. 53 99.97 

AS. III .783 .142 .055 .083 .035 .169 .132 .033 

RANG 2. DOMALKALIC. KAMERUNASE. 

1 45.04 16.04 7.10 8.23 4.46 10.19 6.11 2.85 0.33 100.35 

A 3. III . 751 .157 .044 .114 .. 112 .182 .. 098 .031 

2 42.65 15.35 6.46 8.19 7.14 11.96 5.02 1. 47 1. 28 99.52 

AS. III .711 .150 .040 .114 .179 .214 .081 .016 a 

RANG 3. ALKALICALCIC. ETINDASE. 

1 40.53 14.89 1. 02 11.07 8.02 14.62 2.87 1. 95 1.44 0.17 1. 80 1. 32 0.16 99.86 3.043 

A2. II .676 .146 .006 .154 .201 .261 .047 .021 .023 .009 .002 18° 

CLASS III. SALFEMANE. 

RANG 2. DOMALKALIC. ALBANASE. 

1 41.24 15.28 4.64 9.09 8.69 12.97 3.66 3.64 0.92 100.13 

AS. III .687 .150 .029 .126 .217 .232 .059 .038 

RANG 2. DOMALKALIC. ALBANASE. 

1 39.64 16.98 6.61 9.31 6.65 10.58 5.95 3.09 1. 32 100.13 

AS. III .661 .166 .041 .129 .166 .189 .096 .033 
SALFEl\lAN E-OOVOSE. 59 

ORDER 6. LENDOFELIC. PORTUGARE. 

SUBRANQ 4. DOSODIC. LlliiBURGOSE. 

Inclusive. Norm. Locality. Analyst. Reference. Author's name. Remarks. 

or 8.3 di 33.0 Scheidsberg, niohl. Mohl, Anamesite. ab 14.7 ol 8.3 Remagen, N. J., 1874, p. 203. an1~.5 mtl2.8 ne 7. 7 il 1.5 Rhenish Prussia. R. T. 1879, P· LXXII. 

or 9. 0 di 32.0 Sparbrod, Sommer lad. Sommer lad, Hornblende- ab 7.3 ol 6. 8 Rhongebirge. N. J. B. B., II, basalt. om15. 3 mt18.l ne 8.0 il 0.9 p. 155, 1882. ap 1. 7 R. T. 1884, p. LXXIV. 

or 9.5 di 4.0 Philip Island, Selwyn and Selwyn and Ulrich, Basalt. ab 7.3 ol 35.6 Victoria, Ulrich. Geog. Phys. Viet., an26.4 mt 8.8 ne 8.0 Australia. 1866, p. 59. 

R. T. 1869, p. cxu. ' 

SUBRANG 4,5. PRESODIC. (• 

or 6.1 di 17.6 \Veil berg, Nassau. v. Gerichten. v. Gerichten, Basalt. ab 6.3 ol 12.0 N.J., 1874, p. 740. an36.1 mt12.3 ne 7.4 R. T. 1879, p. LXXVI. 

RANG 7. LENFBLIC. KAMERUNARE. 

SUBRANG 4. DOSODIC. MALIGNOSE. 

or 18.4 ac 10.6 Katzenbuckel, H. Rosenbusch. H. Rosenbusch, Nephelinite. ab 2.6 di 20.0 Odenwald. Neph. Katzenb., ne29.5 wo 9.6 mt 7.4 Freiburg, 1869, p. 39. 

R. T. 1869, p. CVI. 

SUBRANG 4. DOSODIC. KAMERUNOSE. 

or 17.2 di 35.3 Upper Picos Valley, . Kertscher. C. Doelter, Augitite . an 7.8 ol 2.2 Santiago, · Die Capverden, 1882, ne27.8 mt 10.2 Cape Verde Islands. p. 79. 

R. T. 1884, p. LXXXII. 

or 3.3 di '36. 4 Upper Picos Valley, Kertscher. C. Doelter, Basalt. an14. 7 ol 7.2 Santiago, Die Capverden, 1882, lc 4.4 mt 9.3 ne23.0 Cape Verde Islands. p. 49. 

R. T. 1884, p. LXXIV. 

0 

SUBRANG 4. DOSODIC. E',riNDOSE. 

. Traces of Cl, F, S, an21. 7 di 19.3 Ross berg, Petersen. Petersen, Basalt. Cr20 3, NiO, and lc 9.2 ol 19.9 n. Rossdorf, N.J., 1869, BaO. ne13.4 am 6. 9 mt 1.4 Hesse-Darmstadt. p. 36. il 3. 5 R. T. 1869, p. CXII. ap 3.0 

ORDER 8. FELDOLENIC. BOHEMARR. 

SUBRANG 3. SODIPOTASSIC. 

an14.7 di 1.6 Herchenberg, Rammelsberg. Rammelsberg, Nephelinite. Calc. fro:i:n lc 16.6 ol 24.5 Laacher See, pri v. contrib., 1872. sol. and ne16.8 am 17.4 mt 6. 7 Rhenish Prussia. R. T. 1873, p. XLIV. insol. 

SUBRANG 4. DOSODIC. CQVOSE. 

anl0.3 di 6.4 St. Vincent, Kertscher. C. Doelter, I Olivine- lc 14.4 ol 18.3 Cape Verde Islands. Die Capverden, 1882, diabase. ne27.3 am 12.5 mt 9.5 p. 15. 

R. T. 1884, p. XLII. 
60 SUPERIOR ANALYSES OE' IGNEOUS ROOKS. 

CLASS !II. SALFEMANE_:_Continued. 

RANG 1. PERALKALIC. IJOLASE. 

No. Si02 Al20 3 Fe20 8 FeO MgO CaO Na20 K,O H20 co, Ti02 P,o. MnO Sum Sp.gr. 

~-

-- --- 1 45.04 11.35 13.92 4.89 4.62 7.86 7.86 2.93 1. 52 trace 0.12 0.18 100.29 3.096 

A2. II . 751 .111 .087 . 068 .116 .140 .127 .031 .001 .003 25.5° ' 

2 44.80 11.11 9.82 5.83 4.88 9.55 6.75 3.67 2.96 0.45 0.12 99.94 2.843 

A2. II • 747 .109 .061 .081 .122 .171 .109 .039 .003 .002 22.fP 

'cLASS IV. DOFEMANE. 

RANG 1. PERMIRLIC. CORTLANDTASE. SECTION 1. PERMIRIC. CORTLANDTIASE. 

1 40.79 10.41 3.52 6.39 23.34 8.48 1.71 0. 71 4.04 trace 99.39 

A3. III .680 .102 .022 .089 .584 .152 .(J27 .007 

CLASS IV. DOFEMANE. 

RANG 1. PERMIRLIC. PAOLASE. SECTION 2. DO!\<IIRIC. 

1 42.68 9.42 11.55 7.23 10.09 13. 15 2.71 1.16 1. 06 0.51 1. 29 100.85 3.114 

A2. II . 711 .092 .072 .100 .252 . 235 .043 .012 .006 .009 

, 

1 I 

CLASS IV. DOFEMANE. 

RANG 1. PERMIRLIC. TEXASE. SECTION 2. DOMIRIC. UVALDIASE. 

1 39.59 12.25 10.15 4.69 14.50 14.13 1. 89 0.76 0.57 0.89 trace 99.55 3.15 

A3. III .660 .120 .064 ,065 .363 .252 .031 .008 -

,, 
SALFEMANE-UV ALDOSE. .61 

ORDER. 9. PERLENIC. FINNARE. 

SUBRANG 4. DOSODIC. !IV AAROSE. 

Inclusive. Norm. Locality. 

I 

Analyst. Reference. Author's name. Remarks. 

SOa trace or 2.5 ac 21.3 Katzen buckel, H. Rosenbusch. H. Rosenbusch, Nephelinite. Nearly in dofe- SrO trace lc 11.6 di 31. 1 Odenwald. Nephel. Katzenb., mane. ne23.0 ol 0.2 mt 9.5 Freiburg, 1869, p. 39. 

R. T. 1869, p. CVI. 

lc 17.0 ac 18.0 Katzenbuckel, H. Rosenbusch. H. Rosenbusch, Nephelinite. Nearly in dofe- ne19. 9 di 23.3 Odenwald. Nephel. Katzenb., mane. ol 6.3 am6.9 Freiburg, 1869, p. 65. mt 5.1 R. T. 1869, p. CVIIT. 

ORDER 1. PERPOLIC. HUNGARARE. SECTION 4. DOMOLIC. 

SUBRANG ~. DOMAGNESIC. CUSTEROSE .. 

- or 2.8 di 18.4 Giimbelberg, Jubasz. G. Tschermak, Picrite. an18. 9 ol 41. 6 Neutitschein, Porphyrg. Oestr., lc 0.9 mt 5.1 ne 7. 7 Moravia. 1869, p. 247. 

R. T. 1869, p. LXXXVI. 

ORDER 2. DO POLIO. SCOT ARE. SECTION 2. DOPYRIC. P AOLIARE. 

SUBRANG 2. DOMAGNESTC. 

or 6. 7 di 36.9 Todtenkopfchen, H. Sommerlad. H. Sommerlad, Hornblende- In W. T., p. 359. ob 11.5 ol 7.6 Rhongebirge. N. J. B. B., II, basalt. No.4. IV. 22. 1'.2. an 10.0 mt 16.7 ne 6.3 il 0.9 p. 155, 1882. Mol. ratio of ap 3.0 R. T. 1884; P· LXXIV. Fe,03 in W. T. 

wrong, also norm. Correct here. 

ORDER 2. DOPOLIC. SCOTARE. SECTION ::l. PYROLIC. TEXIARE. 

SUBRANG 2. DOMAGNESIC. UV ALDOSE. 

Cr20 0 0.13 an 22.5 di 27.4 Ottendorf, Scharizer. Scharizer, Nephelite- NiO trace lc 3.5 ol 16.5 Silesia. Jb. Wien. G. R-A., basalt. ne 8.8 am {.4 mt 14.8 XXXII, p. 475, 1882. 

R. T. 1884, p. LXIV. 

INDEX TO TEXT. 

Page. 

Abbreviations, Jist of .................................. 17-19 

Accuracy of analytical methods ..................... . 

Analyses, completeness of. .......................... .. 

inferior, definition of. ........................... .. 

number of ........................................ . 

quality of, at different periods .................. .. 

rating of. ................... • ...................... . 

rejBction of, grounds for ......................... .. 

selection of, basis of ............................. .. 

superior, definition of·····----------------········ 

Analytical methods, accuracy of ..................... . 

Cla•sificatory position, designation of ................ . 

Completeness of analyses ............................ .. 

Cross,, Iddings, Pirsson, \Vashington, cited. _____ ..... . 

Cross, Whitman, letter of transmittal by ............ .. 

Geikie, Sir Archibald, cited .......................... .. 

11-13 

1()-11 

9 

17 

1&-16 

8-9 

7-10 

7-10 

9 

11-13 

18-15 

10-11 

7,14 

5 

16 

Page 

Iddings, J. P., cited.................................... 14 

Inferior analyses, definition of .. .. .. .. .. .. .. .. . .. .. . .. 9 

Iron oxides, determination of .. . .. .. .. .. .. .. .. .. .. .. .. 10 

Milch, cited .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. .. 14 

Minerals, abbreviations for ............................ 18-19 

Norm, calculation of, in estimating accuracy ......... 12-13 

Phosphoric anhydride, determination of. ............. 10-11 

Quality of analyses at different periods ............... 1&-17 

Ratings of analyses, criteria for....................... 8-10 

Rejection of certain analyses, grounds for ..... . .. .. .. 7-10 

Roth, J., cited ....................................... .. 

Selection of analyses, basis of......................... 7-10 

Subrang, designation of ............................... 13-15 

Superior analyses, definition oL....................... 9 

Titanium dioxide, determination of .................. 10-11 

Washington, H. S., cited ....................... 7,8, 10,11,12 

63 
INDEX TO NEW ROCK NAMES. 

Page. 

Adamellose ......... _________ ...... __ . 0 __ ..... ____ 0 ____ 41 

Akerose. _ ..... 0. 0. 0 0 0 __ . 0 .. 0. 0. 0. __ 0. 0 0. 0 0 0 •..• 0 0 0 0 0 0 0 0 45 

Alaskase 0 .... o 0 .. o .. 0 __ .. 0 .... 0 ____ .......... 0 .... .'.... 22 

Alaskoseo .. 0 .. 0 .. 0 ........ 0 ........ -----0 .. 0 0 .... 0 0 .... 23 

Alsbachase 0 .. 0 ... 0 .... 0 .......... 0 .............. 0 .. __ , 22-24 

Alsbachosc ....... 0 .... 0 .... 0 ............. 0 . .. . .. .. .. .. 25 

Amiatose ... __ ...... 0 .... 0 __ . 0 0 0 0 ...... 0 __ .. _ ...... 0 ... 35 

Andasc 0 .. 0 __ 0 .... 0 .. 0 __ 0 ...... 0 .............. 0 ... 0 • 0 .. 44--50 

Andose ..... 0 ...... 000 ............ o ....... _ ........... 0 47--49 

Atluntare .......... 0 ..... _ ............ 0- .... 0 .... 0 .. 0.. 53 

Austrare 0 0 .... 0 ..... 0 ...... _ 0 ............... 0 ... 0 ... 0 .. 39--43 

Auvergnaseo ........ 0 ........... 0. _ .... 0 .... 0 .... 0 .... 0 

Auvergnosco .... 0 0 __ .. 0. __ ... 0 0 __ ........ __ ...... 0 ... .. 

Bandase ...... 0 __ .............. __ .. 0 0 . 0 .... 0 .. _ ..... 0 .. 

Bandosc 0 .. 0 ......... 0 ... __ .......... __ ........ _ .. 0 __ .. 

Beerbachose 0 ....... _. _ ......................... __ .. ----

Bohernare ....... _ ............................ ---------

56 

57 

42 

43 

51 

59 

Britannare ........ : .. 0 ... __ .... _ ...... 0 0 ....... 0 ...... 0 27-35 

Campunttre 0 --o ................ 0 ...... 0 ____ 0. __ 0 .... 0.. 53 

Camptonase 0 ...... __ .. __ ............... 0 .-.... __ 0 .... 0 54-56 

Camp to nose 0 ....... 0 ..... _ .. __ 0 0 ..... ____ 0. 0 ... __ 0 0 .. 0 55 

Canadare 0 ... _ ..... 0 .... 0 ..... 0 0 .... 0 ....... 0 ....... 0.. 35-37 

Coloradase ......... __ 0 __ 0 __ .. __ ..... 0 .... 0 ........ 0 0 .. 0 34 

Columbare ..... 0 .... _ 0 ..... o 0 ......... 0 0 ..... 0 ......... 23-27 

Cortlandtuseo .... o·· _ ......... 0 0 ......... 0 .. 0 .. _ o ... 0 .. o 60 

Cortlandtiase 0 ... 0 _ ........... 0 0 .... 0 0 .... __ ....... 0 ... 60 

Covose ....... __ ... _ .. _ 0 ...... __ ....... 0 0 .. 0 ..... 0 ..... 0 59 

Custerose ..... 0 .................................... 0 .. 0 61 

Dacasc ..... __ .... 0 .......... · ...... 0 .... _ ..... 0 .... o oooo 40 

Dacosc _ ... 0 ..... 0 ............. _ ... __ .. __ 0 .. 0 __ .. 0 0 .... 0 41 

Dellenoseo 0----. _ .... 0 .. --- .................. 0 .... 0 OOoo 31 

Dofcmane ................................... 0.... . .. .. 60 

Dosalane .... 0 .................................. 0 .. 0... 38-52 

Etindaseo _ .. 0 ... 0 .... _ ........ 0 0 .. 0 ...... 0 ... 0 _ 0 .. 0 0 .. 0 58 

rage. 

Laurdalase .. 0.... .. .. .. o--. 00 ...... 00 00 ...... 00...... 50 

Laurvikose 0 0 ........ 0 ........ 00 ............ 0 .... 0 .... 0 37 

Lcbachose • : ...... 00 0 ...... · ..... 0 .. 0 ....... 0 ... ___ ...... 27 

Limburgase ...... 0 ...... 0 .... 0 ........ 0 __ .. __ 0 ____ 0 00.. 58 

Limburgose. 0 ... 0 ...... 0 .. 0. 0. 0 .... 0 0 0 0. 0 0. 0. 0 0 __ 0..... 59 

Lipamse 0 __ .... 0 ............ __ ...... 0 .... 0 0 .... __ 0 ..... -28-30 

Liparose .... __ ... ____ .. 0 ...... 0 .. 0 0 .......... __ 0 __ 0 __ 0 0 27-29 

Malignase .. o ................. o __ o ____________ O __ OOoOOO 58 

l\Ialignose ........ 0 .......... 0 0 ____ 0 ... __ . 0 .. 0 0 __ .... 0 0 59 

Maripososc ........... __ .. 0 ..... __ ... ______ 0 ...... 0 .. 0.. 37 

Miaskaseo .. __ 0 ........ 0 __ .. 0 0 0 .. 0 ...... __ 0 ..... __ __ __ __ 36 

Miaskosco .. __ .......... 0 .... 0 .... 0 __ ... ____ .. 0. __ __ ____ 37 

Monzonase .. 0 ..... 0 __ .. 0 .... __ .. 0 .. 0 __ .. 0 _ .. __ ... 0 .... 0 44 

Monzonose 0 .... 0 0 .. __ .... 0 ........... 0 ... 0 0 ...... 0 .... 0 •15 

Nordmarkusc ... 0 .... 0 0 .................. 0 .. 0 0 __ 0 ..... 0 34 

Nordmarkosc 0 .... 0 __ ... 0 ........... 0 ... 0. 0 .. 0 .... 0.... 35 

Norgure ......... 0 o,o, .... 0 .............. 0 ... 0 0,......... .'i1 

Omeose --0 0. 0 0 0 0 ... 0 0 0 0 0 0 0 ·o 0 0 0 0 0. 0. 0 0. 0 0. 0 0 0 0 0 0. 0 .. 0. 0 ~7 

Ornose 0 0 0 0 0. 0 0 0 0 0 0 . 0 .. 0 0 0 . 0 0 0 . 0 0 0. 0 ... 0 . 0. 0 0 0 0 0 _ . , _ 0 0. 0 57 

Pantellemse ooOo ....... 0 0 ..... 0 ... __ ..... 0---0 .. 0 ....... 38-40 

Pan tell erose 0 .. 0 ....... 0 .............. 0 .... 0 0 .. 0 0 _ .... 0 41 

Paolase 0 0 0. 0. 0 ° 0 0 00 0. 0 .. 0 oo 0 0 •.. 0. 0 0 0 0 0 0 0 0 0 0 •• 0 0. 0 .. 0 0 0 60 

Paoliare 0 ..... 0 ........ 0 .... -0 .. 0 ....... __ 0 0 ..... 0...... 61 

Persulaneo 0 .......... 0 ...... 0 .... 0 .. 0. 0 ... 0 .. 0 .... 0: .. 0 22-36 

Portugare 0 .. 0 .... 0 .. 0 .. 00 .... 0 0 .. 00 .. 0 .. 0 .. 00 ........ 00 59 

Pnlaskase ... 00 ......... 0 0 ........ 00 00 ...... 0 .. 0 0 .. 00 .. 0 34-36 

Pulaskose 0 .. 00 .. 00 ..... 0 0 0 . 00 ......... 0 .... 0 .. 0 .. 0 . 0 0 .. 35--37 

Riesena"c .................... _ ...... 0 0 ........ 00 ...... 0 24-26 

Rockallttse ........... 0 .. 0 ...... 00 0 .. 0 .......... 0 .. 0 0 .. . 52 

Russarc _ ......... 0 ..... 0 0 ...... 0 ...... 0 .... 0 0 0 .. .. . .. .. 37 

Balfe mane .... 0 .. 0 ... 00 .. 0 ......... 0 0 ...... 0 .. 0 ... 0 .. .. 52-60-

Scotluc ... 00 0 ...... 0 0 ........ 0 0 ........ 000 .. 0 0 .. o,--.... 60 

Shoshonose 0. 0 0. 0 0 0 0 .• 0 0 0 0 0 .. 0. _ 0 0 0 0. 0 .. 0 0 0. ___ ...• o 0 oO 45--47 

Tauroseo ..... o .. o--··-----------o-----oo·-------------- 23 

Etindose ....... 0 0 .. __ ... 0 ............... oo .. 0 0 ........ o 59 Tehamose ..... 0 ..... 0 0 ...... __ 0 00 0 ...... OoOOO 000.00... 25 

Finnareo ...... 0 0 0 .... 0 ............. 0.............. ..... 61 Texaseoo .. 00 .... 0 .... 00 .. 0 ..... 0 .......... 00 0 .... 0..... 60 

Gallare . _____ ........ _ 0 .... 0 ... 0 ....... 0 ... 0 .... -.oo 00. ·55-57 Tex!arc .... 00 ......... "0 .. 0 0 00 0 ............ 00 ......... o 61 

Germ1tnare .. 0 . 0 ...... 0 ...... :. 0 ..... 0 .. 0 0 ... __ ..... 0 .. 45-51 Tonalase .... 0 ...... 0 ...... 0 ... 0 0 .. 0 ... 0 .... 0 0 .. : .. 0 __ .. 42 

Grorudose ...................... 00 0 .... 0 .. 0 0 ...... 0 ... 0 39 Tonaloseo 0 .. 0 .... 0 0 ... 0 ..... 00 0 .......... 0 .... 0 ..... __ . 43 

Ha.rzosc ........................... .' ................... . 

Hessase . ................................. __ .......... . 

Hessose 0 0 .. 0 : .. ............................. 0 ..... 0 .. .. 

Hispanare . ........... _ ... · ............................ . 

Hungarare . .......... __ .. ___ ....... _ .................. . 

Iivaarose . ------ ...................................... . 

Ij olase 0 0 .. 00 0 .. 00. 0 ....... _ ... 0 .. _ ................... .. 

Ilmenose 00 00 ...... 00 .... 0 ........... 0 .... 0 ....... ____ _ 

Italare ....... 0 .......... _ 0 .. 0 ............... 00 0 ...... 00 

Kallerudose 00 .. 0 ........ 0 ..... _ ............ 0 0 0 00 .... 00 

Kamerunare ... _. _ ... _ ........ _ .. __ ........... _ .. -~ _ .. . 

Kamerunase. ---- ...................... _ .............. . 

Kamcrunose .. .......................... __ .... ____ .... . 

Kilauase _ ...... _ .. . .. .. .. . .. .. 00 ...... _ 

Kiluuose ...... ............. . 

Lasscnose . ..... _ .. ___ -----· ............. ·-------······· 

64 

43 

50 

51 

39 

61 

61 

60 

45 

53 

31 

59 

58 

TOSCitll!'-88 ........ oo .. o ........................... 0.... 30-34 

Toscanose 0 .......... ~ 0 .... 0 .. 0 .. 0 .. 0 0 0 ..... 0 0 .... 0 .... 31-33 

Umptekase o-------------oo .. o------------------0--0--0 -14 

Umptekosc .... 0 0 ...... 0 .. 0 0 ........ 0 0 0 .... 0 .. 0 .... 0 -.o ,15 

Uvaldiasco 0 ....... 0 ...... 0 .. 0 0 .... 0 ...... 0 _ ... 0 .. 0-----0 60 

Uvaldosc • 0 0 0 0 0. 0 0. 0 0 0 0. 0. _. 0 0 0 0 _ 0 0. 0 0 0 0 0. 0 .. 0 0 0 0 0 0. 0 0. 61 

Vaalarc ... 0 0 .· .. , ....... 0 ........ 0 .................. 0 .. 0 53 

Vaalu.sc .. 0 .............. 0 0 0 ............... 0 .. ,. 0 ....... 5~ 

Vaalose .... 0 ............... o 0--0 .... 0 0 ...... 0 .... 0 ..... 53 

Vuringaseo ........ 0 .. o .. o .... 0 0 .. 0 .. 0 0 ... 0 .. 0 .... ooOo.. 38 

Varingose .. 0 .. 0 .. 0 .. 0 .. 0 0 ......... 0 .. 0 ...... 0 .... 0 .... 0 39 

Viezzenase ............. 0 .. 0 .. 0 .... 0 .. 0 0 ... 00 .......... 0 36' 

59 Viezzenose. 0 0-- ...... , ............ 0 __ ...... 00 0 .... ooo .. 37 

27 

23 

35 

54 Vulcanosc ..... 00 ........ 0 ............ 0 ..... 00 ..... 00 .. 

55 Westphalose 0 .... 0 0 ..... 0 0 ......... 0 ... 0 .. 0 ·0 ......... 0 0 

33 Yellowstonose ....... __ 0 .. 0 .. 0 .. ____ .. 0 ...... 0 0 .. 0 oo--. 
INDEX TO OLD ROCIC NAMES. 

Page. P>tgc. 

Anamcsite ....................................... 17, 53, 55,59 Nephclite-basalt. _ ........ _ ............................. 55,61 

Andcsi te . .............................. _ 33, 37, 41, 43, 4:1, 17, 49 N cphel i te-syenite ..... _ ........................... _.... 37 

Anorthite rock . . . . . . . . . . . . . . . . . . . . . . . . .•. . . . . . . . . . . . . . . 57 Norite ............................................. _ .... 43,49 

Aplite.................................................. 25. Obsidian .............. _ .. _ ........ _ ........... _. _ .. 29,37,55 

Augitite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Olivine-diabase._ ................ _._ ..... _ ......... _ ... 49,59 

Basalt ............................ 43, 45, 47, 49, 51, 53, 55, 57,59 Ortlcrite ................................. _. _ ........... 45.47 

Dacite ............... _.......................... 31, 33, 36,43 Paleopicrite .............................. _......... 57 

Diabase ....................................... 47,49,53,57,tM Pnntellerite ........................ _ :19,41,53 

Diorite .................................... 43,45,47,49,51,55 Pele'shair ........... ~---········-··-···-··-·-···-· 55,57 

Diorite-porphyry ... -................................. 43 Perlite ......... _ .. _ ..... _ ................. _. . . . . . . . 33 

Ditroite ...... _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Phonolite ................. _ ..... _ ......... _ 37 

Dolerite ...................... _ ................... 49, 51, 53,57 Pierite ......... _ .............. : . ..... --.. -.. -.- · .. - -. · . fl7,61 

Felsite ........ _ ................. _ . . . . . . . . . . . . . . . . . . . . . 23 Picrophyrc .... _ ......... _. _ ..... _ ....... _ ......... :... . 55 

Felsite-porphyry .......... _ ..... _ .......... 23, 27, 29, 31, 33,39 Pitchstone ........ _ ............................ _ ... _ 27, 33, •13 

Felsophyre ....... _ . _ ....... _ . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Porphyrite .......•.................................. 13,49,55 

Forellenstcin . _ .............. _ .. _...................... 51 Proterobase ....... _ ........... _........................ 47 

Gabbro .. _ .......................................... [ll, 53, f>7 Protogine ........................................... , . . 33 

Granite ... __ .......... _ ..... _ .. 2:\25,27,29,31, 33, 3fl, 39, 41, 4f> Quartz-diorite ................................ _ .. 35, R9,41,51 

Granite-porphyry._ .. _ .. _ .. _ ..... -- ......... _ ....... 27, 33,41 Quartz-gabbro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 1 • Granite, segregation in ...... _ .................. _ .. ~ ... 41,45 Quartz-keratophyre .... _ ...... _ ...... _ ................. 23,31 

Granophyre .......... _ ................... _ ............. 23,29 Quartz-norite ...................................... _... 43 

Green rock............................................. 55 Quartz-porphyrite ............................. _._ ..... 41,47 

Greenstone : . . _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43, 45 Quartz-porphyry._ ......................... _ ........... 23,41 

Hornblende-basalt .......... _ ............... _ .......... 59,61 R~tpakiwi granite .................. _ .... __ ............. 25,29 

Keratophyre ........................................ 23,31,45 Rhyolite .................................. _............ 25 

L~turadorite rock .. _ ................. _ ........... _ ..... 43,49 Segregation in granite ................... _ ........ _ .... 41,4& 

Lcncitite ......... _. _................................... 51 Suldcnite ............... , . _ ......... _ ...... _. _.- ........ 43,49 

Lcncitophyre ............ _. _ .... __ .......... _ .......... 37, 53 Syenite ............ -..... -... -........ -........ -....... •15 

Lip!lrite .................................... 25, 27, 31, 33, 35,41 Tachylyte ....... ! . . _. _ .... __ ...••.. ... . . .. ... . . . ...•.• 51 

l\Iehtphyre .......................................... 43,47,1il Trachyte ........................................... 35,37,45 

Mica-picrophyre.................................. ... . . 55 Trap................................................... 51 

Nephelinite ........ __ ............................... 53, 59,61 

6623-No. 28-04--5 65 
INDEX TO LOCALITIES. 

Page. 

Armenia .............................. -----............ 33 

Australia: 

Victoria ............................................ 49,59 

A us t,·ria-Hungary: 

Austria ........................................... 51,57 

Bohemia ...... _ ................................. 43,47;55 

Huugarr .......................... _. __ .. : . ... 25,35, 37,43 

Moravia........................................... 61 

Styria .....................................•........ 33,43 

Tyrol ............................... 33, 41, 43, 45, 47, 49,51 

Canary Islands ....................................... , 37 

Cape Colony . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 

Cape Verde Islands .............. : ............•........ 37,59 

Ecuador . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 

Ferdinandea Island . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 

Finland ................. : ............... 23, 25, 27, 29, 31, 35,43 

France ................................................ , 33 

Germany: 

Baden ..................................... 23, 25, 31, 3.o, 41 

Jianover............. ...... .................. ...... 51 

Jiarz llloun tains. . . . . . . . . . . . . . . . . . . . 23, 31, !l3, 45, 51, 53, 57 

Jicgau ............................................. 37 

Hesse Cassel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 

Hesse DarmstaC: t .................................. 53,59 

Hesse Nassan . ....... _ .............. _ ....... _ ...... 39,59 

MaJnthal ....................................... 47,53,55 

Odenwald ...................................... 53,59,61 

Palatinate......................................... 47 

Rhenish Prussia ... · .............. _ ..... , ...... 35, 45, 51,59 

Rhi:ingcbirge ...............................•.... 45, 59,61 

Saxony ............................................ 23,29 

Silesia ............................................. 41, 61 

Thuringia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 

Vogesen .................. :. . . . . . . . . 23, 25, 29, 35, 41, 45, 51 

Westphalia ; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23, 51 

66 

Page. 

Great Britain: 

England........................................... 55 

Ireland .......................... 23, 27, 31, 33, 39, 43, 45,51 

Scotland ..................................... 27, 31, 41,55 

Wales ............................................ ,. 23,47 

Greenland............................................. 57 

Guatemala............................................. 33 

Hawaii ................................................ 55,57 

Iceland ..............................................• 25,57 

Italy .............................. 23, 27, 29, 33, 35, 39, 45, 49,53 

Ischia .................................... _ ...... ·35, 37,45 

Ponza ........................................... 27, 29,33 

Sicily ................................. _ ........... 49 

Mrtilene ... _ ... _....................................... 33 

P!mtelleria _ ... _ ........... _ ... _ ........... 37, 39, 41, 53, 55, 57 

Patagonia ......... _. ...................... _ ......... 41,43, 45 

Peru................................................... 35 

Philippine Islands ........ _ ......................... 45, 47,49 

Sweden ..... _ ....................... 29, 33, 35, 41, 43, 45,47, 51 

Tpng•i Islands .. .. .. . .. . .. . .. .. .. .. .. .. .. .. . .. .. .. .. . . . 57 

United Statet:: 

,California................................. 33 

Colorado ............................. _ .... _ .. _ ... _ . 47, 55 

Connecticut .......... , .. .. . . .. . . . .. .. . . . .. . . .. . . .. 57 

llfassachusetts . . .. . .. . . .. . . . . . . . .. . .. .. .. . . . . .. . .. . 57 

Minnesota ................................. , .... 39,41,55 

Nevada ................................... 27,31,45,47,51 

New Hampshire ............. -.--................... 27 

New Jersey .......... _ ............ _ ....... _..... 57 

Oregon............................................. 51 

Wyoming.......................................... 51 
J 

ERRATA IN PROFESSIONAL PAPER NO. 14. 

I take advantage of this opportunity to call attention to a number of corrections 

which must be made in Professional Paper No. 14, for some of which I have to thank 

several friends. vVhile the majority may be regarded as of slight importance, yet 

those which affect the norms and the classificatory positions of several rocks should 

be carefully noted. The most important changes in position are: 

No. 12 umptekose, p. 253, should be No. 18a laurdalose, p. 297. 

;No. 2 vulturose, p. 305, should be No. 2 11.8.2.4., p. 307. 

No. 2 vesuvose, p. 307, should be No. 4 braccianose, p. 305. 

No. 1 paolose, p. 361, should be No. 1, subrang 2 of section 3 of texase, p. 363. 

I may add once more that I shall consider it a very great favor to be informed 

of any errors or omissions either in Professional Paper No. 14, or in the present 

work, so that the proper corrections may be incorporated in a subsequent paper. 

Page 23, line 6 from bottom, fur miaskares read miaskases. 

Page 34, lines 7 and 9 from bottom, for one-ninth read one-tenth. 

Page 34, line 5 from bottom, fur one-tenth read one-ninth. 

Page 83, line 6, dele fernie. 

Page 84, lines 7, 8, 9 from bottom, for q read 60q. 

Page 85, lines 10-14 and 19-23,for r read (r+u); for s read (s+v). 

Page 85, lines 19;-24, for Rang read Subrang. 

Page 90, line 10, for 436 read 462: 

Page 104, line 7 from bottom, after silica insert and soda with decreasing silica. 

Page 112, Fernie Subrangs, for NgO read MgO. 

Page 139, No. 1 riesenose, Author's name col., insert Porphyry. 

Page 195, No. 3 nordmarkose, Remarks col., insert phleg:ose. 

Page 199, No. 4 vulsinose, Remarks col., for syenase ·read nordmarkase. 

Pag«;; 207, No. 3 canadase, Remarks col., fur A. G. read J.G. 

Page 226; heading, Fe,03 col., for Fe20 2 read Fe20 3• 

Page 232, No. 21.tonalose, Sp. gr. col., place 16° under 2.740. 

Page 244, No. 115 tonalose, H 20 col., for 0.52 read 0.36. 

Page 245, No. 119 tonalose, Norm col., for di 17 read eli 17.6. 

Page 253, No. 1 umptekose, Norm col., for ne 9.9 read ne 9.4. 

Page 253, No. 12 umptekose, Norm col., for ab 52.4 read ab 46.1. 

for ne 5.7 read ne 9.1. 

(This should be No. 1Sa laurdalose.) after ns 4·

7 insertdi 7.2. 

for ol 4.0 read ol 1.5. 

for il 3.4 read il 3. 3. 

Page 253, No. 13 umptekose, Norm col., for am read an. 

67 
68 ERRA'L'A IN PROFESSIONAL PAPER NO. 14. 

Page 253, No. 14 umptekose, Reference col., for V.R.S. 1'ead P. R. S. 

Page 255, No. 1 ciminose, Norm col., for am 1'ead an. 

Page 255, No. 6 ciminose, Reference col., for V.G. read J.G. 

Page 257, No. 12 monllOnose, Locality col., .fo1' Indian Creek laccolith read Electric Peak. 

Page 261, No. 14 akerose, Locality cpl., fo1' Fairvew 1'cad Fairview. 

Page 279, No. 65 andose, Norm col., for an 22.2 read an 19.5. 

for di 9.0 read di 11.0. (The position of this rock is· not . ) for hy 7. 9 read hy 10. 7. 

changed by these correctiOns. .fqr ol 7. 2 read ol5.9. 

Page 295, heading, insert 3 after Subrang. 

Page 298, No. 7 essexose, CaO col., for 1.311'ead .131. 

Page 298, No. 12 essexose, MgO col., for 1 .11 read .111. 

Page 304, No. 2 vulturose, CaO col., for .106 read .155. 

Page 305, No. 2 vulturose, Norm col.,for or 19.5 read or 4.5. 

for lc 6.1 read lc 17.9. 

(This should be No.2 II.8.2.4.) for di l3.9 read di 23.0. 

for ol 8.2 read ol 3. 7. 

Page 307, No. 2 vesuvosc, Norm correct, but should be No.4 braccianose, p. 305. 

Page 317, No. 8 kentallenosc, Locality col., for Indian Creek laccolith read Electric Peak. 

Page 317, No. 10 kentallenose, Reference col., for 1698 read 168. 

Page 329, No. 21 ornose, Locality col., for Koolan read Koolau. 

Page 345, No. 1 III.6.4.2, Remarks col., after and 6 insert limburgose. 

Page 349, catch title, for SR3 read SR2. 

Page 351, No. 111I. 7.3.5, Author's name col., for nepholite read nephelite. 

Page 351, No.1 III.8.2.3, Norm col., for an 10.2 read am 10.2. 

Page 353, No. 1 <;ovose, Norm col., for di 12.6 read di 12.5. 

for am 6.1 read am 17.8. 

dele wo 10.3. 

Page 353, No.2 covose, Norm col., for di 6.8 read di 15.9. 

for ol 8.4 read ol5.3. 

for am 11.2 read am 17.0. 

dele wo 11.8. 

Page 353, No. 5 covose, Norm col., for di 18.0 read di 21.0. 

for ol1.9 read oll.O. 

fm· am 2. 8 read am 6. 5. 

dele wo 5. 7. 

Page 353, No.6 covose, Norm col., for di 32.4 read di 35.0. 

. for am 1.2 read am 2.4. 

dele wo 2, 9 and ol 0. 9. 

Page 355, catch title, for salfemane read dofemane. 

Page 361, No. 1 paolose, Norm col., for di 21.8 read di 27.4. 

for ol 7.3 read ol 5.5. 

(This should be IV. 23.13.2.) for am 10.8 read am 17.8. 

dele wo 11.4. 

Page 412, No. 1 porphyrite, Sum col., insert 100.55 .. 

Page 418, No. 3 andesite, No. col., for B4 read D4. 

Page 455, Nos. 80 and 81 basalt, Locality col., for Panahon read Punahou. 

Page 489, Cirninite, for 261 read 259. 

Page 490, Granite, inclusion in, in.sert 145, for 263 read 261. 

Page 490, Granite, segregation in, insert 145. 

Page 490, Hornblende-basalt, insert 3.59, for 459 read 455. 

Page 491, Pantellerite; after 219 insert 221. 

Page 494, Greece, after 249 insert 251. 

0 
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[Professional Paper No. 28.] 

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~2) 1\:I.onographs, (3) Professional Papers, (4) Bulletins, (5) ~iineral Resources, (6) Water-Supply and 

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The Professional Papers, Bulletins, and \Vater-Supply Papers treat of a variety of subjects, and 

the total number issued is large. They have therefore been classified into the following series: A, 

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and mineralogy; E, Chemistry and physics; .F, Geography; G, Miscellaneous; H, Forestry; l, Irrigation; .T, Water storage; K, Pumping water; L, Quality of water; M, General hydrographic investigations; N, \Vater power; 0, Underground wat~rs; P, Hydrographic progress reports. This paper is 

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(B=Bulletin, PP=Professional Paper.) . 

SERIES D, PETROGRAPHY AND MINERALOGY. 

B 1. On hypersthene-andesite anrl on triclinic pyroxene in augitic rocks, by Whitman Cross, with a geological sketch of 

Buffalo Peaks, Colorado, by S. F. Emmons. 1883. 42 pp., 2 pls. 

Jl !l. On secondary.enlargements of mineral fragments in certain rocks, hy R. D. Irving and C. R. Vom Hise. 1881. 56 pp., 

. 6 pls. (Out of •tock.) , 

Jl12. A crystallographic study'of the thinolite·of Lake Lahontan, by E. S. Dana. 1881: 34 pp., 3 pls. (Out of stock.j 

R 17. On the developp1cnt of crystallimtion in the ig!1cous rocks of Washoe, Nevada, with notes on the geology of the 

district, by Arnold Hague and J. I'. Iddings. 1885. 44 pp. (Out of stock.) 

Jl 20. Contributions to the mineralogy of the Rocky Mountains, by Whitman Cross and W. F. Hillebnmd. 1885. 114 pp., 

1 pl. (Out of stock.) 

B 28. The gabbros and associated hornblende rocks occurring in the neighborhood of Baltimore, Maryland, hy G. H. 

Williams. 1886. 78 pp., 4 pls. (Oi1t of stock.) 

B 38. Peridotite of Elliott County, Kentucky, by J. S. Diller. 1887. 31 pp:, 1 pl. 

B 59. The g11bbros and associated rocks in Delaware, by F. D. Chester. 1890. 45 pp., 1 pl. (Out of stock.) 

B 61. Contributions to the mineralogy of the Pacific coast, by W. H. Jlfelville and Waldemar Lindgren. 1890. ·40 pp., 3 pis. 

(Out of stock.) 

B 62. The greenstone-schist areas of the .Menominee und Marquette regions.of Michigan; a contribution to the subJect of 

dynamic metamorphism in eruptive rocks, by G. H. Williams; with introduction by R. D. Irving. 1890. 241 pp., 

16 pis. (Out of stock.) 

B 66. On a group of volcanic rocks from the Tewan Mountains, New Mexico, and on ·the occurrence of primary quartz itl 

certain basalts, by J. I'. Iddings. 1890. 34-pp. 

B 74. The minerals of North Carolina, by F. A. Genth. 1891. 119 pp. (Out of stock.) 

B 7~. A late volcanic eruption in northern California and its peculiar lotva, by J. S. Diller.· 1891. 33 pp., 17 pis: (Out of 

stock.) 

ll 89. Some IItva flows of the western slope· of the Sierra Nevada, California, by F. I,. Ransome. 1898. 74 pp., 11 pis. 

B 107. The trnp dikes of the L~tke Champlain region, by J. F. Kemp and V. F. Masters. 1893. 62 pp., 4 pis. (Out of stock.) 

ll109. The eruptive and sedimentary rocks on Pigeon Point, Minnesota, and their contact phenomena, by W. S. Bayley. 

1893. 121 pp., 16 pis . 

.D 1.26. A ll!incrnlogicnl lexicon of Franklin, Hamp~hire, n,nrl. Hn,rnvden counties, }tfn,ssachusctts, ~Y B. K. Emerson. 1895. 

180 pp., 1. pl. 

B 136. Volcanic rocks of South Mountain, Pennsylvo;nia, by Florence Bascom. 1896. 124 pp., 28 pis. 

B 150. The educational serks of :rock specimens collected and distributed by the United States Geological Survey, b~- J. S. 

Diller. 1898. 400 pp., 47 pls. 

B 157. The gneisses, gabbro-schists, 1tnd assode,ted rocks of southwestern Minnesota, by C. W. Hall. 1899. 160 pp., 27 pis. 

PI' 3. Geology ancl petrogmphy of Crater Lake Nai>::o:>ai P~trk, b;- J. S. Diller und H. B. Patton. 1902. 167 pp., 19 pls. 

B 209. The geology of Ascutney Mountain, Vermont, by h, A. Daly. 1903. 122 pp., 7 pis. 

I'P 14. Chemical •umlyses of igneous rocks publisher! from lSS< to 1900, with a critical discussion of the character and use 

of analyses, by H. S. Washington. 1903. 495 pp. 

PP 18. Chemical composition of igneous rocks ex.pre~:sed by nwans ot o..l.i!lgrams, with reference to rock classification on a 

quantitative chemieo·mineralogical basis, by .T. P. Iddings. 1903: 98 pp., 8 pls. 

B 220. ::llineral anulyses from the laboratories of the United States Geological Survey, 1880 to 1903, tnhnlnted by F. W. 

Clltrke, chief chemist. 1903. 119 pp. 

B 228. Ann lyses of rocks from the laboratory of the United States Geological Survey, 1SSO to 1903, tabulated hy F.\\'. Clarke, 

chief chemist. 1904. 375 pp. 

PP 28. The superior analyses of igneous rocks from Roth's tahcllen, 1869 to 1884, armnged according to the quantitative 

system of classification, by H. S. Washington. 1904. fi8 pp. 
II PUBLIOA'l'IONS OF UNITED STATES GEOLOGICAL SURVEY. 

SERIES E, CHEMISTRY AND PHYSICS. t 

B 9. Repo•t of work done in the Washington laboratory during the fiscal year 1883-84, by F. W. Clarke and T. 11. Chatard, 

1884. 40 pp. (Out of stock.) 

B 14. Electrical and mngnetic properties of the iron carburets, by Carl Burns and Vincent Strouhul. 1885. 23{pp. (Out 

of stock.) 

B 27. Report of work done in the division of chemistry and physics, mainly during the year 1884-85. 1886. so pp. 

B 32. Liste and analyses of the minernl springs of the United Stutes (u preliminurystudy), by Albert C. Peale. 1886. 235 pp. 

(Out of stock.) 

B 35. Physical properties of the iron carburets, by Carl Barns and Vincent Strouhal. 1886. 62 pp. 

B 36. Subsidence of fine solid particles in liquids, by Carl Barns. 1886. 58 pp. (Out of stock.) 

B 42. Report of work done in the division of chemistry and physics, mainly during the fiscal year 188.'>-86, by F. w. Clarke. 1887. 152 pp., 1 pl. (Out of stock.) 

B 47. Analyses of waters of the Yellowstone Nationul Park, with un account of the methods of unalyses employed, by 

Frank Austin Gooch and James Edward Whitfield. 1888. 84 pp. (Out of stock.) 

B 52. Subaerial decay of rocks and origin of the red color of certuin formations, by I. C. Russell. 1889. 65 pp., 5 pis. (Out 

of stock.) 

B 54. On the thermoelectric mensurement of high temperatures, by Carl Barns. 1889. 313 pp., 11 pis. (Out of stock.) 

B 55. Report of work done in the division of chemistry and physics, mainly during the fiscal year 1886-87, by F. W. Clarke. 

1889. 96 pp. (Out of stock.) 

B 60. Report of work done in the division of chemistry and physics, mainly during the fisettl year 1887-88. 1890. 174 pp. 

(Out of stock.) 

B 64. Report of work done in the division of chemistry and physics, mainly during the fiscal year 1888-89, ·by F. W. Clarke. 

1890. 60 pp. 

B 68. Earthquakes in California in 1889, by James Edward Keeler. 1890. 25 pp. 

B 73. The viscosity of solids, by Carl Barns. 1891. xii, 139 pp., 6 pis. 

R 78. Report of work done in the division of chemistry and physics, mainly during the fiscal year 1889-90, by F·. w. Clarke. 

1891. 131 pp. (Out of stock). 

B 90. Report of work done in the division of chemistry and physics, mainly during the fiscal year 189{)-91, by F. W. Clarke. 

1892. 77 pp. 

B 92. The compressibility of liquids, by. Carl Barns. 1892. 96 pp., 29 pis. 

B 94. T~e mcchaniom of solid viscosity, by Carl Barns. 1892. 138 pp. 

B 95. Earthquakes in California in 1890 and 1891, by Edward Singleton Holden. 1892. 31 pp. 

B 96. The volume thermodynamics of liquids, by Carl Barns. 1892. 100 pp; 

B 103. High temperature work in igneous fusion and ebullition, chiefly in relation to pressure, by Carl Barns. 1893. 57 

pp., 9 pis. 

B 112. Earthquakes in California in 1892, by Charles D. Perrine. 1893. 57 pp. 

·R 113. Report of work done in the division of chemistry and physics during the fiscal years 1891-92 and 1892-93, by F. w. 

Clarke. 1893. 115 pp. 

B 114. Earthquakes in California in 1893, by Charles D. Perrine. 1894. 23 pp. 

B 125. The constitution of the silicates, by F. W. Clarke~ 1895. 100 pp. (Out of stock.) 

'B 129. Earthqunkcs in California In 1894, by Charles D. Perrine. 1895. 25 pp. 

B 147. Earthquakes in California in 1895, by Charles D. Perrine. 1896. 23 pp. 

B 148. Analyses of rocks, with a chapter on analytical methods, laboratory of the United States Geological Survey, 1880 to 

1896, by F. W. Clarke and W. F. Hillebrand. 1897. 306 pp. (Out of stock.) 

B 155. Earthquakes in California in 1896 und 1897, by Chllrles D. Perrine. 1898. 47 pp. 

B 161. Earthquakes in Caliiornill in 1893, by Charles D. Pe~rine. 1899. 31 pp., 1 pl. 

B 167. Contributions to chemistry and mineralogy from the labomtory of the United States Geological Survey; F. w. Clarke, chief chemist. 1900. 166 pp. 

B 168. Analyses of rocks, laboratory of the United States Geological Survey, 1880 to 1899, tabulated by F. W. Clarke. 1900. 

308 pp. (Out of stock.) 

B 176. Some principles and methods of rock llnalysis, by W. F. Hillebrand. 1900. 114 pp. 

B 186. On pyrite and marcasite, by H. N. Stokes. 1900. 50 pp. . 

B 207. The.llction of ammonium chloride upon silicates, by F. W. Clarke and George Steiger. 1902,. 57 pp. (Out of stock.) 

PP 14. Chemical analyses of igneous rocks published from 1884 to 1900, with a critical disc.uss1un of the character and use 

of analyses, by H. S. Washington. 1903. 495 pp. 

PP 18. Chemical composition of igneous rocks expressed by means of diagm:::us, with reference to rock classification on a 

quantitative chemico·mineralogical basis, by J. P. Iddings .. · ·1~03. 98 pp., 8 pis. 

B 220. 1\Iineral analyses from the laboratories of the United f;.ates Geological Survey, 1880 to 1903, tabulated by F. w. Clarke, chief chemist. 1903. 119 pp. 

B 228. Analyses of rocks from the laboratory of the Uni'-~d States Geological Survey, 1880 to 1903, tabulated by F. W. Clarke, 

chief chemist. 1904. 375 pp. / · 

PP 28. The superior analyses of igneous rocks from Roth's tabcllcn, 1869 to 1884, arranged ·according to the quantitative 

system of classification, by H. S. Washington. 1904. 68 pp .. 

Correspondence should be addressed toTHE DIRECTOR, 

MAY, 1904. 

UNITED STATES GEOLOGICAL SURVEY, 

WASHINGTON, D. C.