Economic Geology

gulches which run down the mountain side. The vein has an approximate width
of 100 feet and crosses diagonally in a northeasterly direction, over the range
a distance of several thousand feet. On this vein the Pintledanne group of
claims has been staked. The vein was examined where it crossed the two
gulches at an altitude of 2,000 feet above the Kemano River and at a distance
from it of about 2 miles. The vein is well and strongly defined, with a frozen
contact with the granite on the lower side and diabase on the upper side. The
diabase dyke is of a later date than either the vein or the granite. The vein
matter is rather sparsely mineralized with copper pyrites, bornite and molybdenite
unevenly disseminated through the mass and it is doubtful with the present
showing on the property, whether it would pay to work.

This description indicates that the vein in question is near those staked
by Smith and Nash. The presence of two occurrences of large mineralized
quartz veins in the vicinity of the western slope of Sandifer Peak indicates that
this section of the map-area, though difficult of access, is good prospecting
ground. Similar rocks extend southwards to Kimsquit Lake.

Sandifer Lake Occurrence (6)

On ‘the mountain east of Sandifer Lake, near the headwaters of the west
fork of Laventie Creek, chalcopyrite is sparsely distributed in a contact meta-
morphic zone about 400 feet long and 40 to 60 feet wide. This showing was
staked during the summer of 1950 by C. McNeill of Ootsa Lake and
G. A. Young of Vancouver. It occurs along the north contact of a small stock
of granite, and consists of a mass of well-developed crystals of epidote and
garnet, with chlorite and minor amounts of specular hematite, chalcopyrite,
pyrite, and bismuthinite.

Chezko River (23, 24)
Reference: B.C. Minister of Mines, Ann. Rept. 1926, pp. 150-151.

In the canyon of Chezko River about 2 miles below the outlet of Tesla
Lake, chalcopyrite occurs (24) in a rusty weathering shear zone of green
andesite. The zone is 15 feet wide, strikes north 45 degrees west, and dips
vertically. Midway along it is a 6-inch quartz vein containing chalcopyrite,
hematite, pyrite, and galena. The zone is exposed for about 300 feet and
about 60 feet down the wall of the canyon. A sample of the mineralized
material assayed 0.02 ounce gold and 1.6 ounces silver a ton, and 3.59
per cent copper.

On the southeast slope of Two Bear Hill the writer’s party discovered
a mineralized zone (23) 3 to 4 feet wide that strikes north 50 degrees west.

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