71

The claims are underlain by red tuffs, red breccias, green tuffs, and
andesite flows. A banded limestone bed 6 feet wide is interbedded with
the tuffs. These strike southeast and dip steeply north.

At elevation 6,400 feet an adit has been driven 110 feet south 14
degrees east in massive, poorly bedded, red tuffs. The adit follows a
tight fault fissure for 50 feet, but discloses no mineralization. The fault
strikes south and dips vertically. In a large cut on the surface 40 feet
above and 25 feet east of the face of the adit a small, irregular, sheared
zone is exposed. It ranges from 1 to 4 inches in width and is traversed by
stringers and veinlets of bornite. Its length does not exceed 100 feet. A
few tons of ore were shipped from this cut in 1916. A representative
sample of the ore collected at that time by Mr. Galloway assayed: gold,
0-45 ounce a ton; silver, 120-1 ounces a ton; copper, 47-8 per cent.

Commencing a few hundred feet farther south, above elevation 6,500
feet, there is a gently rising flat some 3,000 feet in length from east to
west and 1,500 feet wide from north to south. A well-built cabin is located
on the north rim of the flat at elevation 6,450 feet. Over most of the flat
the bedrock is concealed by a shallow covering of disintegrated rock.
Several veins have been located south and southeast of the cabin by sink-
ing test pits on the site of disintegrated vein material. In an open-cut
some 500 feet south of the cabin, a galena vein occurs along a fault fissure
striking south 50 degrees east and dipping 60 degrees northeast. The
vein contains up to 5 per cent of chalcopyrite associated with the solid
galena. It ranges from 1 to 3 inches in width. Other open-cuts sunk at
intervals for over 400 feet along the strike of the vein disclose a persistent
fault fissure with a very variable mineral content. In many of the cuts
the fault fissure is narrow and contains very little or no vein filling. In
a cut at elevation 6,700 feet a vein is exposed for 15 feet. The vein ranges
from 3 to 12 inches in width, and consists of solid, coarsely crystalline
galena with less than 1 per cent of chalcopyrite. A representative sample
taken from a ton of this ore piled beside the cut assayed: gold, 0-10 ounce
a ton; silver, 102-55 ounces a ton; lead, 83-58 per cent.

On the north rim of the flat 1,000 feet east of the cabin, a sheared
zone in fine-grained andesite is exposed for 300 feet by five open-cuts.
Tt strikes from east to south 60 degrees east and the dip ranges from vertical
to 70 degrees south. In the west trench, at elevation 6,600 feet, the
sheared zone is barren. In a large cut 50 feet farther east the sheared zone
is 6 feet wide and there are three sulphide veins, two of them 12 inches
wide and the other 3 inches wide, separated by 3 feet and 1 foot of barren
rock, respectively. The vein filling consists of roughly equal parts of solid
galena and dark sphalerite with a little chalcopyrite. A representative
sample of this ore assayed: gold, 0-24 ounce a ton; silver, 33-51 ounces
a ton; lead, 26:21 per cent, zinc, 28-45 per cent; copper, 0-74 per cent.
In the next cut, 60 feet farther east, there is a single, sparsely mineralized
shear zone. In the fourth cut, 70 feet farther east, there is a sulphide
vein, 2 inches wide, composed of sphalerite and galena with a little chal-
copyrite. A similar vein ranging from 6 to 8 inches in width is exposed in
a fifth open-cut, about 100 feet farther east. Here dark sphalerite is the
more abundant mineral and it is accompanied by a little carbonate gangue.

Several other smaller veins are exposed in open-cuts in either andesitic
or tuffaceous voleanic rocks near the centre of the flat.