New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1850-11-07

the principal veins Yields from 60 to 10 per cent.
of copper, 1t is said that this mine contains
good quantity OF silver ore. There IS stlA anoth-
err mine north Of SomeryIle, winch contains &C
cording TO DR.. Touey, native copper, In irregu-
lar masses, phosphate OF copper carbonate oil
copper green. red oxide of copper, the MASSIVE
variety crystalized in octahedra, native slYer-ln
small masses, green quartz, chrysoprase prem
mite, )" &c.
These form the general geological features Of
the secondary formation OF the State OF Neville
sew, and my next letter viii give description OF
the third and last. Yours, &c. D. W B.
No ~
To the Editor Of he Tribune:
In my last letter described the features OF the
second division of the geology of New Jersey;
and in conclusion | will infinitely describe the
third. In this division, which might properly be
STYLED the mountainous division" and which ex
tends in breadth varying from fifteen to thirty five
miles, in right angles with the general course of
the mountains, the geological formations are
strongly blended, and, in places almost mex
plcablv confounded This district is exceedingly
interesting, far more so than the others, not only
in consequence of its broken geology but also from
the variety of soil, surface, &C., and its minera'
wealth and vegetable productions Rocks OF
pretty uniform character are found in the primitive
ridges but they are Of coarse and uneven tex
ture and surface aggregated with crystals Of
quartz and fedspar. Sometimes they contain con
siderable quantities of shorl, garnets, hornbende'
epdote and mica and in several places, have
noticed that for a considerable distance between
these rocks none Of the shorl or garnet minerals
can be found Granite gneiss, and senite, are
formed in this section BY the blending and combi-
nation of these materials also at some points, the
primitive greensboro is seen
The most common rocks in the transition section
are grauwacke and grauwacke slate but there
are beautiful mural precpces miles in length, pre-
scented by the range Of mountains IN Bergen ana
Morris counties, of Long Pond Green Pond and
RaHenberg, which are composed OF reddish
brown grauwacke, interspcrscd with lndurated
I CLAW. red and white jasper, and red and white
quartz. The rocks incline to the northwest, at
an angle of about 40 deg, in even stratiticationi
and, singular as it may seem, they are abundaatIy
dispersed over and along the banks of the Pequan-
neck, from Pompton to newfoundland Adjacent
TO the Pequannock gtauwacke, IN place, resting on
sieuite is frequently observed AT hlnSWood'
Mount Pleasant, and SuckasunDy, magnetic IRON
ore of excellent quality IS extensively mined
! These ranges according to geological surveys, are
on the strata extending nearly 500 miles lnlenStn'
from the w bite Hills in New Hampshire to Black
River and consequently embrace some oil the
richest and most productive IRON mines IN the
United States The beds are from eight to twelve
/ feet in thickness and the ore Is OF n remarkably
excellent quality. Cacareous spar and asbestos
are frequent. and suphurct OF IRON abounds IN
many parts of the Highlands. The most extensive
| bed OF the last which has been discovered is that
in Morris county. near the eastern base o the cop
peras mountain, and opposite Green Pond Oar
ing the last war with Great Britain, considerable
quantities OF cOpperas were manufactured mere
Some OF the ore in this region is so highly nlpre5
mated with sulphur that it is rendered entirely
useless for the forge. There IS also found here
large quantities OF graphite or lead
Large plates Of block mica crystazcd III heHae.
! dral form sometimes foot IN diameter, nave beeh
found on the Ramapo River near the Monroe
Iron W orks In the elevated primitive ranges
west Of the transition district compact ieldspar
and epidote are very common; and IN various
| parts Of The transition range, compact limestone
is also found, In the vicinity OF New-German-
town, and on line running south west and north
| east from that polUt, putting limestone, OF
quality equal to that used III the Capital at W ASH
ipeton is abundantly Dispersal and 1t IS frequent
! N converted into lime. w est OF compton PAINS,
il the primitive range OF Morris County, N what
IS called Stormy Brook Mountain, ehortc slate IS
found in considerable quantities and quite recent
! " granular limestone has also been quarncd III the
| same mountain. Tins mineral IS OF beautiful
clear white, admitting oil an excellent polish and
! is often associated with amlanthus and tale, al
| ternatiug in narrow Veins. There IS graJlsh
white marble found in the vicinity, whch 10 rem
dered porphyritic by grains oi noble serpentlne
! distributed through 1t. 1t is exceedingly hard,
and admits OF highly beautiful polish There
| have also been observed metallic crystals sup
uoscd TO be Chromate OF iron, III the tale found az
| this place From this mineral, chemists have eX-
tracted an acid which ii united with lead forms
chronate OF lead, and which is considered ya.u-
able igment Adjacent to Green Pond, beautl-
| full specimenof galcua is found IN the SrauWacke
| ranges and tremOlito seems to be extensively con-
nected with the granular limestone OF Stormy
Brook.
After we ascend northwest of the transition
district, we again arrive where the primitive " re-
sumes its empire, and it then includes the W all
| killand Hamburg Mountains These mountains are
then continued by ntersectng :chooey and the
! Museoneteoue, from the line OF New York to that
| of PENNSYLVANIA, without even beng broken by
| the interruption of stream. The primitive, the
! secondary and transition formations appear as l!
| they were combined III this ridge, and portion OF
the primitive section west OF IL. There are quite
number of innomlnate bulls II this section, such
ms Marble Mountain, Scotts Mountain, Jenny
jump. Furnace Mountain Pimple Hills, and Po-
! chuck Mountain. Tue whole OF this IS remark
ably good mineral district-the best in New
Jersey Highly magnetic iron ore, but which IS
blended with foreign substances to considerable
extent is found in Schooeys and Museoneteon6
Mountain The foreign substances IN this ore
render il almost impossible in some Instances to
Droduce iidueaCtion | remember, when but a
| bow filing my pockets with an excellent quality
| of gunfints, which are dispersed IN abundance
along the sides of this hill, and also in the valley
m ToIik Nafla Hos