The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1920-01-15

west. At 50 feet beyond it's inter-
section with the VEN the tunnel cuts
Ferticai auIt with gouge three feet
wide, which strikes north so degrees
west. The Vein strikes about north
rs degrees west and is nearly vertical.
The wall rocks are the blush states
OF the upper Prichard. Stringers and
masses of pyrrhoute, pyrite, sphaler-
lite, and little galena are distributed
in zone from one to eight feet wide.
In places the sphalerite Is quite free
from iron, but as a whole the ore is Of
low grade and probably does not con-
tain more than six per cent of zinc
across any part of the zone. The vein
in the Sydney workings is exposed Oh
the Denver claim to the west; the face
Of the west drift in the Sydney tunnel
is not far from the end line of the
Denver Claim.
The Denver claim was located over
Denver creek A tunnel driven west
30 feet is on this vein, and 25 feet to
the south another tunnel 20 feet long
explores a parallel vein. The north
ern vein shows in the creek bed from
2 to 8 feet of high grade sphalerite
and galena ore. The vein trends north
65 degrees west and apparently is YER
teal. The Nabob Mining company,
which has extensively developed the
country northwest of the Denver claim,
has undertaken the exploitation of the
Denver claim, which it procured
through an option. This work was be-
gun in July, 1916, with force of eight
men, and it is reported that the ex-
tension of the northerly tunnel on the
discovery vein disclosed an ore shoot
140 feet long and from 2 to feet wide.
Assays of the ore are said to run 81
per cent of lead, 20 per cent of zinc,
and 10 ounces of silver to the ton. 1t
is proposed to explore this ore shoot
further through the west Sydney
drift, where a depth of 100 feet be-
low the Denver working will be OBJ
tanned. The south vein on the Denver
claim is from one to two feet wide
and is composed principally of pyrrho-
tite and quartz. The wall rocks are
sheared states.
Nabob.
The Nafbob mine is I'm the southeast
quarter section q, 7. As N, r. e.
Two patented claims are included in
the group The developments are ex-
tensive, probably over 1000 feet of
work having been done, but at the
time of visit operations were suspend
ed and the long drift and crosscut
west of the shaft were inaccessible on
account of bad air. the principal
work has been directed through
lower tunnel driven on a course north
43 degrees west for about 2200 feet to
"a station at the intersection with the
Nabob fissure. From the portal the
tunnel penetrates hard white quartz
lite of the middle part of the Prichard
formation for 500 feet and then passes
into the conformably everything states
and intercalcated layers of quartzite.
In the tunnel section the formation
strikes northwest and dips 40 to 60
degrees northeast. The wall rocks of
the NaIbob vein strike north 20 degrees
west and dip 80 degrees east the
vein strikes north rs degrees west
and dips SIS degrees south. The Ma
bob vein on the tunnel level is develop
ed by a drift to the west of 600 feet
From this point long crosscut to the
north is reported to have cut the V
and Idaho veins, whose outcrops were
noted on the surface, but this cross
cut was not accessible at the time OF
visit. From the sta tion a raise ex-
tends to the surface, 420 feet on the
dip Of the vein, and a Wine was sunk
100 feet below THE tunnel level. About
500 feet back from the station velr
known as the Crystalite Is developed
by a drift 10 the east for several hun
dred feet. The Nabob vein has beer
opened near it's outcrop by two tun-
Inels aggregating several hundred fee
in length. Several carloads of ore is
reported to have been shipped from
these workings; the last shipment OF
two cars was made in February 1916
The vein here strikes north 80 degrees
west and dips 60 degrees south, ant
the slate and quartzite wall rocks
strike north so degrees west and dill
50 degrees northeast.
The ore of the Nabob fissure in thu
upper workings is mixture of gt.lena
sphalerite, pyrrhotite, and pyrite in
gangue consisting dominantly o
quartz. Pyrrhotite becomes mucl
more abundant in the vein In tn
lower levels. At the station the vein
whose maximum width is three feet, i
composed principally of fine-graine'
pyrrhotite in which there are a few
narrow seams Of galena and SINAI