45

Further work was done in 1925, and the following year 22 tons of ore was
shipped, which assayed: gold, 4-65 ounces a ton; arsenic, 42°3 per cent;
cobalt, 4-6 per cent. The property was operated by Aurimont Gold Mines,
Limited, during 1928 and an additional 23 tons of the gold-cobalt-arsenic
ore was shipped.

The ore is essentially gold-bearing arsenopyrite, and occurs as shoots
along a strong fault fissure in the grey, coarsely crystalline granodiorite boss
that forms the core of the mountain. The fissure has been traced by open-
cuts and adits for over 1,500 feet up a steep slope between elevations of
5,150 and 6,025 feet. It enters sedimentary rocks below 5,200 feet and is
drift covered in that direction. The sediments are chiefly greywacke with
some beds of garnetiferous argillite. At elevation 6,025 feet the fissure
passes over the peak of the mountain and down into the Juniper Creek
side of the divide. The fissure strikes east and dips from 45 to 60 degrees
north. It ranges from a few inches to 3 feet in width of sheared and
altered granodiorite, and where ore shoots occur this material is replaced
by some quartz and hornblende and metallic minerals, which in order of
their abundance are: arsenopyrite, safflorite, molybdenite, and chalco-
pyrite. Gold occurs as small grains scattered through the arsenopyrite and
safflorite, and a small amount is also present in the quartz.

No. 1 adit at elevation 5,200 feet is 540 feet long. The fissured zone is
intersected 55 feet from the portal and is followed for 485 feet east to the
face of the drift. For the first 200 feet the zone averages 12 inches in
width. It consists largely of sheared granodiorite with much chlorite and
considerable glassy quartz, and contains occasional small seams of arseno-
pyrite and safflorite. A 12-inch channel sample taken across a particularly
rich-looking part of the zone containing a 2-inch seam coloured with
crimson cobalt bloom, 150 feet from the portal, assayed: gold, 2-04
ounces a ton; silver, 0-26 ounce a ton; nickel, 0:02 per cent; cobalt, 1-81
per cent. Midway along the drift the fissuring pinches to a single fault
line marked by vertical striz, but widens again within 50 feet. For 200
feet at the east end of the drift the width of shearing and alteration ranges
from 1 to 3 feet, but the altered rock contains very little quartz or sulphide.
A 12-inch sample of the altered granodiorite, collected 150 feet from the
face, assayed: gold, a trace; silver, a trace.

No. 2 adit, at elevation 5,450 feet, is 475 feet distant from No. 1 adit
up a 3l-degree slope. It follows the fissuring for 725 feet. At 375 feet
from the portal a raise goes up 100 feet, from which a drift runs 85 feet
west, and at 450 feet from the portal a 25-foot winze is sunk in the zone.
For 120 feet from the portal, the zone ranges from 6 to 12 inches in width
and consists mostly of rusty gouge with occasional bands of glassy quartz.
A short raise is driven up 75 feet from the portal, from which some ore was
mined. From 120 to 170 feet along the drift, there is an open fissure 6 to
12 inches wide with neither gouge nor vein filling. Beyond the open part
the fissured zone is normal, consisting of from 6 to 12 inches of brecciated,
altered granodiorite with very little quartz and occasional small sulphide -
seams. At 230 feet from the portal the zone is offset 5 feet southeast by
a cross fault. An 8-inch channel sample collected across the zone a few
feet east of the fault, where there was considerable calcite, assayed: gold,

94295—4