40

dyke of andesine diorite porphyry exposed 12 feet west of the portal, but
the dyke does not come in contact with the vein. A typical 9-inch channel
sample of vein quartz, well mineralized with pyrite and chalcopyrite, taken
in the adit near the portal, assayed: gold, 0-70 ounce a ton; silver, 14-40
ounces a ton; platinum, none; copper, 3:76 per cent. | ,

Several hundred feet upstream from the vein just described there is
a series of small, parallel quartz veins in the andesite on the south side
of the creek. The veins mostly range from 1 to 12 inches in width, with
lengths seldom exceeding 50 feet. They strike a little north of east with
a vertical dip and may be followed along the shore for 400 or 500 feet to
where they cross to the north side at the bend in the stream. The quartz
carries up to 10 per cent of chalcopyrite present in irregular masses. The
andesite in the vicinity of the quartz veinlets is cut by occasional narrow
dykes of quartz diorite porphyry which strike north and dip 65 degrees
west. The quartz veins do not traverse these dykes. Two channel samples
taken across a combined vein width of 19 inches at a place 100 feet west
of the bend in the creek, or about 50 feet west of one of the quartz diorite
porphyry dykes, gave on assay: gold, 0-30 ounce a ton; silver, 2-50 ounces
a ton; copper, 3-08 per cent. The combined quartz samples contained
about 10 per cent chalcopyrite by volume.

One hundred feet to the south an adit has been driven 30 feet through
andesitic lavas to a sheared zone of chloritic schist containing quartz
stringers. The shear zone strikes south 60 degrees east and dips 65 degrees
south. A 24-inch channel sample taken across the shear zone in a nearby
open-cut assayed: gold, 0:02 ounce a ton; silver, 1-58 ounces a ton;
copper, 0-32 per cent.

At an elevation of 1,400 feet, or 750 feet above the adit just mentioned,
some surface work has been done on an 8-inch pyritized quartz vein in
andesite. A channel sample across the vein gave on assay only a trace
of gold and 0-08 ounce a ton of silver. About 800 feet farther east, at an
elevation of 1,000 feet, a trench has been blasted on a grey, fine-grained,
andesitic rock containing a fine dissemination of chalcopyrite veinlets.

The occurrence of a milling grade of gold-quartz ore in the veins
along the creek marks this property as one of sufficient merit to warrant
further development and exploration.

Helen Group (30)
References: Ann. Repts., Minister of Mines, B.C.: 1931, p. 71; 1932, p. 84.

The Helen group, staked by George Alger of Usk in 1931, is about 3
miles northwest of Pitman station on the north side of Sand creek. A foot
trail follows the south side of Sand creek for about 2 miles, then crosses
and leads by a series of switchbacks to the workings.

A thick flow of fine-grained black basalt outcrops on the west side
of a small mountain stream at elevation 2,600 fect, and on the east side
are numerous outcrops of grey andesite. Along the bed of the stream a
shear zone occurs near the contact between the two flows. The shear zone
is conspicuously marked by a 2-foot dyke of fine-grained, altered quartz
diorite that follows along it. Dyke and shear zone strike a little west of
north and dip 35 degrees west. On the foot-wall side of the dyke the basalt