The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1920-01-22
from last weekly

xlaces containing Wadl-rock preccl
oamented ny quartz and carDonates
,ear NE porJai the Vein is staine,
I'm green copper salts, toward In
zee c.l.uleapyriIe. pyrite, gdiena, an'
lille enalcocite were noted. CratieA,
,nnears 10 be more abundant wner,
rae Dlssure cuts Quartzite beds. 4
.n.o,men of the ore was asSayed fo
so.d and SILVER by Ledoux ana com
many. ana gave content of 90 ounce!
If silver and 0.08 ounce OF goid To the
,en lower tunnel, 125 teet above
PINE creek, comprises several hundred
feet of development work, but no ore
has been found in It,
Bobbie Anderson.
The Bobbie Anderson prospect is an
old discovery that hes on the east
sue of Pine creek. "A carload of ga
lena ore was shipped from it many
wears ago. A shaft under the creek
level is reported to be 1870 feet deep,
but it is now partly filled with water.
A tunnel 80 feet below the collar of
the shaft explores the vein for 100
feet to the east. The vein is about
one foot wide in the tunnel but is re-
ported to be six feet wide in the bot
tom of the shaft. 1t is contained in
banded blue states and quantities OF
the Prichard formation. The ore is
principally chalcopyrite, pyrite, and
galena in a quartz gangue with sparse
siderite. A specimen from this pros
rect shows an interesting relation be-
tween chalcopyrite, sphalerite and ga
lena. The chalcopynte is in two bands
at opposite ends Of the specimen. 1t
is very fine grained and greatly shear
ed being traversed near it's borders by
veinlets of galena and little sphal-
erite. Sphalerite as medium grained
nodules an inch or more in diameter
occurs between the bands of chal-
bupt is mostly inclosed by
galena of coarser texture which shows
no evidence of shearing. From these
relations in this speciment it is believ-
ed that the chalcoprite was deposited
first and sphalerite and galena later.
III another specimen, however, galena
and chalcopyrtite appear to be con-
temporaneous with vein quartz, a re-
Ia tion which indicates recurrent de-
position of the minerals in the vein.
Northern Light.
The Northern Light group comprises
five unpatented claims on the west
side of Pine creek about three-quart-
ars of a mile north of Beeler. The dis
covery was made in 1894, but the active
of the property dates
from June, 1915, when it was acquired
BY the present company. Up to july
1916, about 1900 feet Of development
work had been done in surface tun-
nel Of $40 feet, a 400-foot shaft, ana
1rifts ON the 100, 200 and 400 foot
evels. The country rocks of the veins
consist of two beds of hard, massive
luartzite separate by states with in
ercalcated gray and blue thin-bedded
luartzite. one quartzite bed, 50 teet
.hick. crops out above the shaft; the
,ther bed, 100 feet thick, crops out 2oo
'eet south of the shaft. The for1na-
zion strikes in general northwest ana
lips at high angle to the northeast
,ut in places on the lower levels the
beds are vertical.
Four veins have been cut by the
workings. These veins trend ABOUT
west northwest and dip south at angles
VARYING between As degrees and 60
degrees. Veins Nos. 1, 2, and are
narrow fissures from a few inches 10
bwo feet wide distributed in zone OF
more or less intense shearing about
$50 feet wide. No large ore shoot mas
been encountered in any OF these VEINS
in some ore occurs for about 100 feet
along the strike with a maximum
width of two feet. Vein NO. crops
cut in the massive quartzite bed ABOVE
the shaft but below the surface II
ma sses into the underlying states ana
thin -bedded quartzite. About lnches
of galena or it's oxidation products
cerusite and pyromorphite, was eX-
posed in a surface cut on this vein.
The ore of veins Nos. l, 2 and Is
composed principally Of medium
grained galena with pyrite and smah
amounts of sphalerite and chaicopv-
rite in a quartz and siderite gangue' "A
valuable ore body was encountered IN
vein No. 4 in the fall of 1915, according
to MIR. B. G.. Harmon, manager OF the
mine. This vein, which has CON-
spicuous outcrop of barren quartz hao
not been cut in the mine workings I'M
III crosscut was driven south on the
4OO-foot level The sheared quartzite
country rock. near vein No. 4, contains
abundant pyrrhotite and pyrite. Inc
ore is composed largely OF sphalerte
and galena, though in places pyrrho-
title is abundant. Chalcopyrite occurs
in small amounts. Several specimens
from vein No were mailed TO tne
writer by Mr.. Harmon. In some OF
them galena, sphaler'ite, and pyrrno'
title are intimately associated ana are
contemporaneous, but in others sina'
seams Of galena cut the pyrrhotite
The deposit was formed largely by re-
r,,acanont ~ the Sheared quarlZltt