28

adit would have to be continued somewhat over 100 feet to intersect the
downward continuation of the dyke. A grab sample of the silicified dyke
rock carried neither gold nor silver.

At elevation 2,280 feet, on a steep, rocky slope cleaned by annual
snow slides, a large open-cut in andesite discloses numerous, small, inter-
secting faults and joint planes. Chalcopyrite with pyrite and a little galena
occurs in narrow seams along the faults and joints, and the bordering
andesite is replaced by small veinlets of the sulphides. The ore zone 1s
about 4 feet wide, but gives no promise of continuity along its strike as it
passes gradually into almost barren andesite a short distance above and
below the cut. A selected sample assayed: gold, a trace; silver, 0-84
ounce a ton; copper, 2-16 per cent. A very similar occurrence of chalco-
pyrite and pyrite along fault slips and joint planes in the andesite is
exposed in a second open-cut about 100 feet farther northeast along the
mountain side. Again the ore zone has indefinite boundaries and lacks
continuity.

"The trail continues to an elevation of 3,000 feet where there is a dyke-
like body of fine-grained, brownish purple albite andesite, which strikes
east and dips 65 to 70 degrees north. The north contact of this dyke or
flow has been stripped for about 60 feet and a trench 14 feet long blasted
into it to expose six or seven parallel fractures, about 15 inches apart,
which contain vein fillings of quartz, calcite, and bornite, with a little
chalcocite. The bornite veins range from 1 to 8 inches in width with an
average width of 4 inches, but they do not appear to continue along their
strike for over 50 feet. ‘The mountain slope in the neighbourhood is mostly
drift covered and unprospected. A typical sample collected from the ore
dumps assayed: gold, a trace; silver, 9-64 ounces a ton; copper, 19-10 per
cent.

About 1,000 feet northeast along the mountain from the two cuts
mentioned above an adit at elevation 2,300 feet, which is reached by a
separate trail from the creek below, has been driven 270 feet in a south-
east direction in andesitic lavas. Several intersecting and steeply dipping
fault slips were drifted along and several inches of quartz calcite gangue
occurs at intervals in the fault gouge, but no ore was found. The adit
was driven with the intention of intersecting the downward continuation
of a quartz-albite dyke that outcrops on the east side of a steep-walled
ravine cut by a small mountain stream at elevation 2,700 feet. The dyke
is 12 feet thick, strikes south 10 degrees east, and dips east at 45 degrees.
The hanging-wall side of the dyke is bordered by a 14-inch quartz vein,
containing about 2 per cent of chalcopyrite and bornite. At about 2,500
feet elevation the dyke crosses to the west side of the creek and pinches out.
Where the dyke narrows before pinching it is altered and impregnated with
a little chalcopyrite. A 14-inch channel sample across the vein assayed:
gold, 0-02 ounce a ton; silver, 5-98 ounces a ton; copper, 1-16 per cent.

Shenandoah Group (19)
Beene Ann. Repts., Minister of Mines, B.C.: 1927, p. 126; 1928, p. 147; 1929,
p. 150.
The Shenandoah claims are on the north side of the north fork of
Chimdemash creek, approximately 12 miles east by road and pack-horse