26

Fifty-five feet from the adit entrance a 6-inch quartz vein comes in
and widens to 2 feet in a few yards. At the 75-foot mark it has a width
of 3 feet and 35 feet farther at the face of the adit it is 114 feet wide. A
short crosscut has been driven to the northwest, 5 feet from the face.
The quartz lens carries no disseminated sulphides, but is cut by two or
three narrow pyrite seams, which have the same strike and dip as the
vein. The writer collected a series of five channel samples across the
113 feet of quartz vein and all of them when assayed yielded only a trace
of silver and no gold. A channel sample taken across 20 inches of schist
and quartz from the roof of the adit, 24 feet from the entrance, showed
neither gold nor silver on assay.

A second adit 100 feet distant and 30 feet higher follows a quartz-
pyrite lens for 40 feet. The lens has been mined out above the tunnel for
20 feet by a stope that opens out into what was formerly a third adit.
In the roof of the stope the vein has an average width of 2 feet and con-
sists of silicified schist and quartz stringers. Along the northwest side
of the vein is a seam of rather coarse pyrite averaging from 2 to 4 inches
in thickness. The pyrite is accompanied by small veinlets of chal-
copyrite and this sulphide ore is reported to carry up to $60 a ton in gold.
An oxidized sample taken from this vein at the upper entrance to the
stope was crushed and panned and it yielded free gold. H. T. James
reports that 30 tons of ore shipped from this working in 1926 gave net
returns of: gold, 1-6 ounces to the ton; silver, 1-4 ounces to the ton; and
copper, 1-1 per cent.

No. 4 adit is 400 feet vertically above the main adit and is 750 feet
farther up the slope of the mountain. It has been driven for 35 feet along
the shear zone in a direction north 60 degrees east. At the entrance to the
adit the vein is 16 inches wide and consists of schist with quartz veinlets.
The vein width increases to 3 feet at the face of the drift; quartz is
abundant, but no pyrite is present. Two channel samples were taken
across the face by the writer. One, 19 inches in length, assayed 0-045
ounce of gold a ton and 0-04 ounce of silver a ton, but the other, 24
inches in length, contained neither gold nor silver. At elevations of
125 and 225 feet, respectively, above this adit there are signs of previous
prospecting along the strike of the shear zone. At the highest point an
adit now caved was driven 50 feet in the overburden, but bedrock was
evidently not reached.

La_ Libertad
References: Annual Reports of the Minister of Mines, B.C.: 1929, p. 77; 1930, p. 78.

The claim is a short distance northwest of the Forest Lookout station,
between elevations of 4,700 and 5,000 feet. The lookout is 6 miles south-
east of Terrace on top of Thornhill mountain. The country rock
consists of grey granodiorite cut by dykes of quartz-orthoclase porphyry
and by later dykes of quartz diorite and lamprophyre. Two parallel fault
fractures lie about 530 feet apart and strike north 30 degrees east magnetic
across the claim. The lamprophyre dykes are offset by the faults, but the
quartz diorite dykes are later and cut across the faults without displace-