The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1913-06-19

states. 1t Is one of group of claims
lying mostly in Montana, the others
if which were not visited. It is de-
veloped by an adit level and drifts az
gregating 1900 feet in length, shaft
80 feet deep and some minor open
ings The country rock is pale green
ish banded shale with thin quartzite
beds. representing the lower part of
the Newland (WalIace) formation. A
vertical diabase dixie of irregular
width trending about N. IS degrees
west cuts the shales. A mineralized
shear zone of so feet or more wide
trending west northwest affects the
diabase principally. Within it are
numerous seams and veins Of quartz,
! calcite and siderite, carrying small
amounts Of chalcopyrite. pyrite and
chalcocite. Specks Of the chalcopy-
rite have been also introduced along
the innumerable shearing planes of
the zone and the whole mass is said 70
assay 81 and more TO the ton in gold.
AT the time of visit few tons Of this
ore was being shipped to smelter as
ia test sample,
Monitor.
The principal mines adjacent to and
on the Idaho side of the state line are
the Monitor Richmond and others In
the midst of lagre group of claims
lying between the divide and the loop
of the Chicago, Milwaukee & Puget
Sound railway. Considerable devel-
opment work was done on the two
claims mentioned, but their hoist and
other improvements were completely
destroyed by the forest fires Of 1910.
and they were for the time being in
accessible. These deposits are all In
Hmy and shaly sandstones represent
ing the lower part Of the Newland
(Wallace) formation near the. hori-
ION of the Wishards sill. From the
mine dumps it appears that the upper
workings are in oxidized material,
carrying large percentages OF iron and
some copper carbonates. In depth this
Is succeeded by chalcopyrite and py-
rite in gangus consisting mainly of
calcite and siderite.
Big Elk.
The Big Elk prospect, located just
above the Chicago, Milwaukee & Pu-
get Sound railway tracks, about two
miles northwest of Adair, was seen
before the fires reached that vicinity
This is replacement along shear
zone that can be traced for half
mile or more, trending N. 40 degrees
to 10 degrees w. in the lower part of
the sandy shales regarded as belong
ing to the Newland formation. 1t is
developed by a 4O-foot shaft, 10
foot winze and some short adits. The
shear zone has been mineralized up to
six feet in width by the introduction
of chalcopyrite, pyrite, calcite and
quartz. Within this mineralized por-
ton are found irregular punches up
to 2 or feet thick of chalcopyrite
with calcite and quartz gangue. This
ore Is said to assay $40 in gold and 2
or ounces of silver to the ton and 80
per cent of copper.
Silica.
A quarter of a mile north of the
north line of section g. T. 46 ~, r. 6
E., the Silica Gold e. Copper Mining
company has a group of claims located
on three parallel veins, which cut
limy, buff weathering sediments rep
resenting the Newland formation. The
chief lode seems to consist of fault
zone which is feet or more in width
and is filled with crushed rock and
more or less angular fragments of
quartz 1t trends about N. 20 degrees
w. and may be a combination of the
the southern part of section 4. A few
little local punches of pyrite and chal-
copyrite occur apparently where side
assures intersect the main brecciated
zone. The sulphides are said to carry
gold to the value of "a to $12 ton.
Siderite and calcite also occur in
varying amounts. The So called mid
lie lode is $50 feet north of the one
lust described and roughly parallel to
L. The development work consists of
IN open cut 20 feet long which shows
4 great siderite lode approximately 20
'eet wide trending S. so degrees z. I
md dipping steeply south. No pyrite
,r chalcopyrite was observed here.
About 1900 feet north of this lode &C.
'urs another almost parallel vein 1t
consists of shear zone in siliceous
sediments representing the Newland
ormation. where quartz has replaced
ome Of the crushed country rock No
'ther naturalization was observed /
lere, although 1t Is said that speci-
mems of aurferous pyrite and chal- .
opyrite had been found in the vein.
St. Joe Quartz and Vicinity.
AT the prospects located along st. I
oe river the most development work
las been done on a claim at God
ards owned by the st. Joe Quartz
timing company. A tunnel 400 feet
ing penetrates mineralized shear
one in the Wishards sill. The zone
rends about east and west and con-
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