27

ment. Quartz veins follow the faults and are younger than the dykes. The
veins are composed of milky white quartz with little or no sulphide, and
in places exhibit many glassy, transparent quartz crystals.

Two quartz veins, each about 200 feet long and 100 feet apart, lie in
the more easterly fault. The northern one has an average width of 8
inches and the other averages 16 inches. The dip of the vein ranges from
55 to 70 degrees to the southeast. A channel sample taken across 19 inches
of quartz from the southern vein gave on assay only a trace in gold and
silver.

The main quartz vein in the more westerly fault is about 450 feet
long. It is 3 feet wide in places and the average width is about 18 inches.
The vein dip is from 60 degrees to 75 degrees southeast. An 18-inch
channel sample taken by the writer yielded only a trace of gold and silver.
A third sample taken about 1,100 feet to the southwest, where a pit had
been put down on a 12-inch quartz vein dipping at 65 degrees to the north-
west, likewise showed the presence of only a trace of gold and silver.

Where the trail from the lookout crosses the westerly fault, a pit has
been sunk on a narrow, sheared, and carbonated zone mineralized with
small seams of chalcopyrite and galena. Samples taken here are reported
to have yielded low assays in gold and silver.

Ptarmigan Claim

References: Annual Reports of the Minister of Mines, B.C.: 1924, p. 48; 1930, p. 78.
Geol. Suryv., Canada, Sum. Rept. 1925, pt. A, p. 118.

The Ptarmigan claim owned by J. A. Michaud of Terrace adjoins the
north boundary of the St. Paul claim and lies on the Zymoetz River slope
of Thornhill mountain, approximately 64 miles due southeast of Terrace.
On the face of a steep bluff between elevations of 4,400 and 4,600 feet, an
isolated roof pendant of sheared greenstone in grey, coarse-grained grano-
diorite has been impregnated by quartz and carbonate stringers and vein-
lets. The veinlets are roughly parallel to the schistosity, striking north 45
degrees east, and are sparsely mineralized with chalcopyrite and pyrite.
The roof pendant is about 75 feet wide and extends down the bluff for at
least 150 feet. f

Approximately 300 feet higher and at an elevation of 4,900 feet there
are two other roof pendants in the granodiorite, each about 50 feet in
diameter and somewhat over 100 feet apart. Presumably they were once
quartzites, but now are partly altered to tale schist and are heavily impreg-
nated with finely crystalline pyrite. The outcrops are stained a rusty colour
through oxidation of the pyrite.

There is a third remnant of sedimentary rock about 20 feet wide at
an elevation of 4,700 feet. It has been transformed largely to schist and
holds quartz and carbonate stringers carrying grey copper, chaicopyrite,
galena, and pyrite over a width of 8 feet. The mineral deposit is confined
to a shear zone that extends northeastward down the mountain slope in
the granodiorite. A chip sample collected by J. T. Mandy from an open-
cut on the mineralized outcrop assayed 0-01 ounce to the ton in gold and