9

being the Lucky Jim property. Small veins of chalcopyrite also occur
along the contacts of Triassic limestone roof pendants in the granodiorite,
on the mountain slope south of Williams creek.

Scheelite and molybdenite deposits occur on Thornhill mountain about
6 miles southeast of Usk. The molybdenite is in a pegmatitic phase of
granodiorite and the scheelite occurs in a small quartz vein associated
with free gold. The quartz veins in granodiorite prospected by the Nichol-
son Creek Mining Corporation on Molybdenum creek, 3 miles north of
Usk, contain molybdenite associated with pyrite.

The ore deposits are believed to have been derived from a common
source, the Coast Range batholith. There is a gradual change in the type
of deposit found in a direction at right angles to the main contact zone
between the Hazelton group and the batholithic rocks. High-temperature
minerals such as scheelite and molybdenite were deposited close to their
point of origin in the igneous rocks. Gold pyrite deposits came next in a
slightly cooler zone followed by the copper and arsenic zone minerals and
finally the silver, lead, and zinc minerals were deposited in the zone
of lowest temperature. The high-temperature minerals were deposited
in the Coast Range batholith and the low-temperature minerals with few
exceptions are as much as 15 miles from its edge. The gradation from
gcld through copper to silver-lead-zine deposits shows no change in relation
to individual intrusive stocks. It is probable that the metals rose from a
source directly below them and that the horizontal gradation from high- to
low-temperature metals is due to the increasing depth from southwest to
northeast of the source rock, the Coast Range batholith.1

As pointed out in the introduction, small commercial gold deposits are
known to exist in this area and there is reason to expect, judging by the
widespread mineralization, that new mines either large or small may be
developed.

PROPERTIES IN THE VICINITY OF KITSUMGALLUM LAKE
Hunter Group

(See Figure 1)

References: Annual Reports of the Minister of Mines, B.C.: 1918, p. 50; 1927, p. 64;
1930, p. 76.

The Hunter group is situated on Egan creek, a tributary of Cedar
river, about 18 miles north of Kitsumgallum lake. There is a good road
from Rosswood at the head of the lake to Cedar River crossing, a distance
of about 10 miles. About one-quarter mile south of the crossing a good
pack-horse trail branches to the right and leads 8 miles farther north to the
property. The trail rises gradually from an initial elevation of about 800
feet to somewhat over 2,000 feet, and then gradually drops down 500 feet
to Egan creek. A log cabin is on the north bank of the creek and a
prominent quartz vein is exposed at the water’s edge on the south bank
of the stream opposite the cabin. Oscar Olander of Rosswood is the owner.

1 Hanson, George: Zoning of Mineral Deposits in B.C.; Trans. R.S.C., sec. IV,
pp. 119-126 (1927).