The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1853-06-15

sunk ss.h 8. property Of NJ Hail. And also upon
specoa Of the red oxide ssnsas l. At the mouth Of
would be- .afe to estimate at 20 per cent.
has never bsen my fortune before to see anything
like these beds Of oxide Of copper 1t is, - you know
valuable ore yielding larger per centags than any
osr Of copper hat is worked Judging from speci
MEMS (of which have seen many,) appears to me to
with which am acquainted. The masses Of native cop
per implanted in similar manner In the red OXIDE
and are 1s.h'
Gap is certainly very interesting one and offers every
nducsDent for an active and thorough sa0rat'n and
Con derpg the facility of access to this property by
the railroad leading to Alexandria, the thorough aad easy
drainage BY adi levels due to the peculiar conagarston
early return Of the outlay In rich and productive ORE
have hesitation In giving as my opinion that the pro-
perry be brought into productive state at far less
expenditure than Is usual In copper mining generally The
region is healthy, well watered near to fuel and pro-
vided with soil capable Of sustaining large population,
and suited to the growth of all the grains par
tcularly adapted to grazing.
1t is perhaps worthy Of remark, that copper Of
rious to be dfused to remarkable extent
through the rocks of this region where there no
appearances Of proper lode vein. observed vare-
this manner through bed Of very hard and compact
graywacke ste upon the summit of the hill above Dr.
Taaferros pit and half mile from it. This d. semna-
except that the weather had turned the exposed surfaces
green from the decomposition Of the In the veins of
red oxide ALSO much of the epdote gangue which has
the peculiar yellow green color appropriate to that mine
raj observed under the glass to contain mBute rounded
globues Of oxide OF cooper OF metallic "copper" and the
weight of this gangue bears testimony to its containing
respectfully, B. SILLIMAN. ia.
ANALYSIS OF PROFESSOR Benz. SILIIxAN, JR.
New YORK, May 18 1853.
sRIpresent you herewith with two chemical analyses
Of the copper of the Gap mines These
taken by myself from the mine, and the ansly
have been made by Prof John Porter Of the Analytical
No. was portion of the greensh epdote rock, show.
ing trace Of copper of red oxide OF copper and
CHOSEN representing the poorest part of the 1t
yielded of metallic copper 2. IA per cent No
ton Of the red oxide Of copper separated from metallic
copper and fair specimen Of this substance Itgave
metallic copper u a. No fair judgment of the value of
the in ques ion Tor of any ore) can be formed from
hand specimen An assay upon sample Of large lot Of
dressed is requisite in order to obtain the cenage
value. To make rude guess, should say that several
tons Of which saw the ground would yield from
twenty to twenty five per cent Of copper; have the
honor to remain b. SlILIMAN, JR.
Chiffon Of New York, have made analy equally "a
MEMS which yielded folows-2.7 per cent, l81s per
cent 277 per cent al per cent sS per cent and s91
per cent. At the close Of his analysis he says
Allow me to congratulate you upon your good fortune
in securing mineral right which promises to be of such
value The above analysis shows that the quality Of the
easy to have selected pieces which would have given much
higher numbers; but endeavored to get as far
seDtaon Of the probable future yield as possible have
mines in this COUNTRY whsh awakened large
expectations but have yet seen anything which
promised so well as this
The Manassas Copper Mining Company has been organ
lied with capital OF million of dollars, represented
By hundred shares Of ten dollars EACH IT will be
managed by of great experience and energy, who
will deveIope its in the shortest possible time.