41

A 10-foot adit 35 feet northeast of No. 2 adit is on the contact of the
granodiorite with a body of sedimentary rocks extending to the east. The
sediments are largely concealed by a light drift cover of sand and gravel.
In the 10-foot adit a siderite vein passes from the granodiorite into impure
quartzite. The vein ranges from 4 to 10 inches in width where exposed for
20 feet in the granodiorite, but pinches to 1 inch in a few feet on entering
the quartzite. The vein is dark due to fine replacement of the carbonate
by jamesonite. Sphalerite of resinous appearance is present in large, plum-
like masses, and its colour blends with the rust from the oxidation of the
siderite. A 6-inch channel sample taken across the vein at the portal of
the adit assayed: gold, 0-005 ounce a ton; silver, 16-01 ounces a ton; lead,
7-82 per cent; zinc, 2:34 per cent; antimony, 3:68 per cent.

Seventy feet farther northeast a very similar carbonate vein ranging
from 2 to 8 inches in width is exposed in an open-cut in greywacke. The
vein strikes north and dips 35 degrees east. It is exposed for 60 feet along
the slope. A 6-inch channel sample taken across the vein in the cut
assayed: gold, nil; silver, 1-32 ounces a ton; lead, 5-67 per cent; zinc, a
trace; antimony, 2°51 per cent; bismuth, nil; arsenic, nil.

Daley West Group (22)

References: Ann. Rept., Minister of Mines, B.C., 1916, p. 116. Geol. Surv., Canada,
Mem. 110, 1919, p. 25.

The Daley West property is on the east side of Mission Creek, 2
miles south of New Hazelton. A wagon road was constructed to the prop-
erty in 1916 and the Spokane Rocher Déboulé Mining and Copper Company
explored the vein by driving two adits.

The claims are near the northern end of the porphyritic granodiorite
boss that forms the core of Rocher Déboulé mountain. The granodiorite
is a coarsely crystalline grey rock with conspicuous phenocrysts of brown
biotite and light-coloured plagiaclase (zoned, ranging andesine to oligo-
clase) in a groundmass of quartz and orthoclase. A quartz fissure vein
occurs in the granodiorite between elevations of 2,000 and 2,400 feet,
following a strong fault plane. The wall-rocks are altered and silicified
and bear sulphides over widths up to one foot. Both vein and wall-rock
carry up to 50 per cent of pyrite and arsenopyrite with a little chalcopy-
rite, but the average sulphide content of the vein as a whole does not
exceed 5 per cent.

The main adit, at elevation 2,175 feet, is driven 235 feet southerly
along the vein. In the adit the quartz vein strikes south 30 degrees west
and dips 65 degrees northwest. The vein has an average width of 6 inches,
and with the additional mineralized wall-rock in many places approaches
3 feet in width. An 18-inch channel sample taken across the vein 45
feet from the portal of the adit assayed: gold, 0-06 ounce a ton; silver,
0-27 ounce a ton; copper, 0-05 per cent. A 7-inch channel sample taken
12 feet from the face of the adit, where the deposit is largely silicified and
pyritized altered granodiorite, assayed: gold, 0-025 ounce a ton; silver,
0-38 ounce a ton; copper, 0:63 per cent. A 15-inch channel sample taken
across the vein in the face of the adit assayed: gold, 0-04 ounce a ton;
silver, 1-37 ounces a ton; copper, 1-92 per cent.