The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1920-01-22
Pine Creek Mines
CONTINUED from Page 81

CONTINUED from Page 81
crushed black states of the Prichard
formation. The fault strikes east and
dips 81 degrees S. at the face of the
tunnel, where there is "A tough black
gouge inches wide. a dark dixie
about 20 feet wide appears in the
hanging wall of the fault.
Spokane.
The Spokane group consisting OF
three unpatented claims, lies on the
east side of the west fork of Pine
creek in section 81, r. 48 N, Il. 2 L.
The claims were located in 1912. They
are developed by tunnel 500 feet
long driven southeastward from the
valley level. The country rocks are
greatly sheared and contorted blue
siliceous states of the Prichard forma
ton. They contain many quartz VEIN
lets, which generally lie in the bed
ding. The largest vein has a maxi
mum width of two feet as exposed in
crosscut south from the main tun-
mel 1t strikes N. so degrees w. and
dips As degrees SW.--lt lies along n
fault plane on which there Is black
gouge several inches thick Galena
sphalerite and pyrite are sparingly
disseminated in the veins or occur in
small punches. They are associated
with abundant white CLASSY quartz
ell
International.
The International group consists of
nine unpatented claims south of the
Spokane group. The principal open
ing is tunnel 500 feet long driven
from the creek level along a assure
that trends IS. 80 degrees II and dips
60 degrees s. Bunches and irregular
venlets of quartz and associated min
erals make out in places along this
assure. Galena, sphalerite pyrrhotite
and pyrite occur with the quartz and
subordinate siderite gangue though
the development work has nowhere
disclosed any considerable ore body.
Blue states and interbedded quartzite
layers show great variation in strike
and dip in the tunnel section. A dark
colored dixie that is rich in biotite ex-
tends for short distance along a slip
parallel to the main flssure.
Sherman.
The Sherman group is developed by
a tunnel $50 feet long driven from the
east bank of the West Fork of Pine
creek. AT the portal of the tunnel blue
states and interbedded gray quartz
ties strike n, 20 degrees e, and dip 55
degrees e. but toward the end of the
tunnel they strike n. so degrees e. and
dip 80 degrees s. The tunnel is driv-
en- eastward along a fissure which Is
conformable for the most part to the
bedding planes of the states. A quartz
vein with a maximum width of one
foot occurs in the fissure Here and
there slips, transverse to the main ifs
sure displace the vein. Galena,
sphalerite. chalcopyrte and abundant
pyrrhotite and pyrite are the ore min
erals of the vein. The gangue is dom
inantly a CLASSY white quartz, but in
places calcite and siderite are abund-
ant
X. c.
The X. c. prospect is in section %
r. As NJ, R. / f. on the north side of
Bear gulch about three-quarters of a
mile west of its junction with the
West Fork of Pine creek. Here a
tunnel Is driven n. Is degrees w. for
100 feet in greatly sheared states to a
vein in fault fissure which trends n
25 degrees w. and dips about so de-
grees NE. "A drift on the vein ex-
tends about $50 feet to the north, with
short crosscuts into the footwall. The
fault marks the contact between blue
states on the east and a gray quartz
tie to the west both rocks probably
in the upper part of the Prichard for
nation.
Tiberius.
The Tiberius prospect is in section
"a, II. As N, r.. ! e., at the head of a
small gulch tributary to Ross Fork 1t
is developed by a tunnel probably not
over 200 feet long driven to the west,
This tunnel was not accessible
at the time of visit. The rock
on the dump is a greenish sericitic or
slate. 1t has the appearance of a
greatly sheared dixie rock but there is
little clue to its origin even when II
is examined in thin section. The rock
is composed Of sericite, quartz and
chlnrite with some calcite grains.
About two tons of zinc ore is on the
dump. The vein is apparently about
one foot wide and is composed of
sphalerite and pyrite in a gangue OF
quartz, siderite and calcite,
ITO he continued)