Economic Geology
Roosevelt Group (13)

References: Geol. Surv., Canada, Sum. Rept. 1924, pt. A, pp. 53, 54 (1925); B.C.
Minister of Mines, Ann. Repts.: 1926, pp. 146, 147; 1945, p. 69.

This group of eight claims approximately 1,100 feet above the level of
Whitesail Lake is reached by the well-graded trail that services the properties
on this part of Chikamin Mountain. This trail starts from a deep bay 3 miles
west of Zinc Bay and continues up the mountain to the Garner No. 1 and
Marie claim and the old Ruby adit, a total distance of about 3 miles. At about
14 miles up the trail a branch to the right leads to a small creek on which
occurs the original showing on the Roosevelt group. Alongside the creek
a short adit was driven southwesterly for 37 feet where it intersected a shear
zone containing a quartz stringer 8 to 9 inches wide. Strike of the shear is south
30 degrees east. The underground development followed this shear for 40
feet. From this point a crosscut was driven for 25 feet. Minerals present in the
vein are pyrite, galena, sphalerite, and arsenopyrite. A sample taken across
8 inches, by S. Holland of the British Columbia Department of Mines, in
1945, assayed: gold, .29 ounce a ton; silver, 17.9 ounces a ton, lead 14.3
per cent; and zinc, 15.8 per cent.

In 1945 Privateer Mines Limited did about 500 feet of diamond drilling
in three holes directed to intersect the southward extension of the shear zone.
The results of this drilling are not known.

When the writer visited the property in 1949 the adit portal was caved
and access was not possible. The rock in which the shear occurs is a red-green
breccia. About 5 tons of mineralized material were found in front of the adit.
A sample of this material assayed: gold, .04 ounce a ton; silver, 14.38 ounces
a ton; lead, 14.0 per cent; and zinc, 31.6 per cent. Gangue consists of quartz
and calcite and metallic minerals present were galena, sphalerite, arseno-
pyrite, pyrite, and chalcopyrite. Comb structures in the quartz suggest fissure
filling.

Dads Special (12)

Reference: B.C. Minister of Mines, Ann. Rept. 1945, p. 69.

About a mile up the Chikamin Mountain trail and 900 feet above the
lake an outcrop of rusty weathering tuffs and breccias is exposed in a small
creek, 300 feet east of the trail. A 4-inch stringer of galena and 42-inch
stringer of sphalerite that strike south 45 degrees east and dip vertically occur
in the creek bottom. This occurrence was covered by a group of four claims

owned by A. Ritz of Wistaria.
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