23

A second adit, 100 feet farther south and at 50 feet lower elevation,
was driven for 20 feet along the same shear zone. The andesite wall-rock
in the adit is impregnated with about 1 per cent of disseminated chalco-
pyrite over a width of 2 feet on both sides of the sheared zone.

Other exploration work includes the sinking of numerous test pits on
the talus slope and the driving of several short adits.

At elevation 3,500 feet a 12-inch quartz vein on the trail has been
trenched for about 50 feet in the diorite. The vein contains less than 1 per
cent of pyrite and chalcopyrite. A typical sample of the vein quartz gave
on assay: gold, none; silver, 0-30 ounce a ton; copper, 0:1 per cent.

Frisco Group (14)

- References: Ann. Repts., Minister of Mines, B.C.: 1916, p. 90; 1925, p. 180; 1928, p.
149. Geol. Surv., Canada, Sum. Rept. 1925, pt. A, p. 111.

The Frisco claims are above timber-line on the south side of Frisco
creek about 14 miles by trail southeast of Pacific. At the junction of
Frisco with Legate creek a well-graded branch trail from the Legate
Creek trail leads up the mountain to the workings. In 1917 M. Orr of
Pacific shipped 10 tons of hand-picked silver-copper ore from this property,
which is said to have assayed: gold, a trace; silver, 33-5 ounces a ton;
copper, 42-2 per cent. No work has been done in recent years.

On a steep slope, at elevation 4,700 feet, andesitic, volcanic rocks are
intruded by a sill-like body of quartz porphyry. A bed about 12 inches
thick lies several feet above the intrusive and contains an abundance of
bornite oxidized on the surface to malachite and azurite. The mineralized
bed strikes east and dips 30 degrees south, but has been traced for less than
100 feet. A grab sample taken from a small pile of hand-sorted ore
assayed: gold, a trace; silver, 11-60 ounces a ton; copper, 11-62 per cent.

About 1,000 feet farther east, at elevation 4,650 feet, a quartz vein 6
to 24 inches wide is exposed for about 100 feet along the hanging-wall side
of another quartz porphyry dyke intruding the andesite. The vein is
sparsely mineralized with chalcocite. An 8-inch channel sample taken
across the vein assayed: gold, 0-02 ounce a ton; silver, 17-38 ounces a ton.

Other occurrences of the silver-copper minerals in andesite associated
with intrusive dykes and sills of quartz porphyry are reported to occur
farther east towards the head of Frisco creek.

Zona May Group (15)

References: Ann. Rept., Minister of Mines, B.C., 1928, p. 147. Geol. Surv., Canada,
Sum. Rept. 1925, pt. A, p. 112.

This property is on the east side of the south fork of Legate creek
about 14 miles by trail southeast of Pacific. A branch trail from the Legate
Creek trail follows along the east side of the south fork to the foot of a
glacier about half a mile wide. The Zona May vein, reached by climbing
to the top of the glacier, is exposed in several places between elevations of
3,900 and 4,200 feet along the south side of the glacial cirque.

At elevation 4,000 feet at the eastern edge of the glacier the quartz
vein is exposed for about 125 feet along a bench before it follows up the