The advocate. [volume] (Charleston, W. Va.) 1901-1913, 1910-04-21
Mineral Deposits in
4. The Western States


Hj washington, April 20.--The IN
creasing interest in the mineral pro-
-idncts OF the Wcstern States. rspcc-
Tally those lying in or west Of what
may be broadly termed the Rocky
Nountain region, is reflected in the
! large measure Of attention given to
tIat region by the Geological Sur
y Vey, which for several years has is
saed. under the title "COntribu-
= lions, to economic geology" annual
volumes devoted largely to the min
etal resources OF that part Of the
4 country. ~
me latest volume Of this series
II Nbulletin $500 contains q number
or valuable papers. discussing gold.
silver, ceNeht, and iron in Colorado:
: gold, silver, copper and asphaltitr in
Nevada; gold and silver In Oregon;
@fSad.r|zinc and iron in Now McNico:
: ~olframitr and marble IL Arizona:
and other lesser deposits.
Colorado.
In Colorado IN investigation was
made Of the mining camps Of Gum
.nisan county. where the Tincun.
Tomichi. Gold Brick. Quartz Creek.
and other districts were examined.
porous, though more or less dcvcl-
opment is under way.
The Taylor Peak and Whitrpinc
iroh deposits Of Colorado are not Yet
OF great commercial - importance.
though they may become more VAL
liable when transportation facilities
are improved and richer iron beds
elsewhere are worked out. The
- Taylor Peak deposits are the NOR,
N+llnataE ,but the less accessible
Both aEs&in or close to the border
Of GunniGOn county. The Taylor
Peak ores are chiefly magnetic: the
Whitc2ine ores are limoniiic bog ores
and replacement deposits
Owing to the tack OF timber in
Colorado. satisfactory and accessible
cement materials IN that State
should be particularly valuable 70"
'bulldln2 purposes. An inveStiga-
ton made BY the Survey shows that
they exist at several points in north
ern Colorado. The limestone to hr
used Is in the formation known to
Seclo&iSts rs the Niobrara. which
outcrops in narrow belt along the
eastern face OF the Rocky Mountains
in Boulder and Laramie counties.
. Nevada.
The revival Of interest in Nevada
gold and silver mines brought about
by the discoveries at Goldfeld has
led to tn" development Of other dis
trlcts. two Of which are discussed
iii the bulletin. The town Of Horn
silver. which lies in Esmcralda coun-
ty, 2G miles southwest Of Goldfeld.
is described as Il promising camp
though when it was visited only ono
mine mad been developed far enough
to ship ore. One or two neighbour
ing mines that were worked forty
years ago but were abandoned on ac-
count Of transportation difficulties
nave now been reOpened. Round
Mountain. another camp Described
lies 43 miles north Of Tonopah. Only
one mine WAS examined in detail. and
this was found to carry OXidized ore
averaging SO to 5 . to the ton The
dirt at thc foot Of the south slope
Of Round Mountain was being wash
cd by hydraulic power with good
results.
y large number OF promising cop
per mines have been opened at G"r-
lnGtOn. in Lyon county. Nov. They
all lie in the SingatSc Ridge. clos
TO the town, and are strung out in
a chain . miles long. Most OF them
have shipped some oNidizcd copper
ore, but operations are now confined
to the Sulphide ores. Some Of them
are old mines.
The asphaltitc deposits Of north
eastern Nevada are also described
The material closely resembles Il de-
post in Oklahoma which has been
fully examined. II looks much like
coal, but is much lighter in Weight
These deposits probably cO"cr wide
area. but have not yet been fully en-
plorcd. Their cxistcnc" shows that
there was one" much petroleum in
tho region, but this probably rs-
capped long ago. owing to the Shnttrr-
ing Of the rocks by geologic dist ur-
Dances.
Oregon.
Western Oregon has produced
considerable gold and silver in past
years, hut the bulletin describes on