9]

biotite and chlorite may be older than the ore, but some biotite flakes are
not parallel to the shear planes and, therefore, are apparently later than
the shearing. The ore-body is cut by many acid and basic dykes, some of
which show slight offsets. One large, irregular dyke about 30 feet wide has
a basic border and an acid rock interior. It rises to the shear zone but
does not enter it.

The ore-body consists of copper ore of 3 per cent grade. The copper
mineral is chalcopyrite and is in many places quite pure. Pyrrhotite,
sphalerite, and pyrite also occur in the ore. Silver and gold values amount
to a dollar or less a ton. The ore that lies in severely crushed rock or near
faults and dykes is richer in copper than it is elsewhere. This increase in
richness seems due to an increase in the amount of chalcopyrite at the
expense of the other sulphides. Pyrrhotite is most plentiful along the
hanging-wall in the form of small masses commonly separated by streaks
of schist from the main ore-body. Sphalerite is less plentiful at the lower
end of the ore-body than higher up. In several places in the ore-body it is
evident, as shown by the preservation of rock texture and by the presence
of unreplaced folia of schist, that the ore formed by replacement.

Carpenter’s Claims (Lecality 119)
Reference: Annual Report of the Minister of Mines, British Columbia, 1922.
Carpenter’s claims are at an elevation of 3,500 feet on Kshwan river

12 miles east of the head of Hastings arm. Several quartz veins that con-
tain pyrite and a little chalcopyrite are known to be present.

Deadwood and Quartz Groups (Locality 194)

References: Annual Report of the Minister of Mines, British Columbia, 1922, 1927,
1980, and 1931.

The Deadwood and Quartz groups adjoin and lie north of the Hidden
Creek group at Anyox. The country rock consists of amphibolite bounded
on the east by argillite. The contact and the sediments strike north.

On the Quartz group a vein up to 18 feet wide lies in argillite and
parallels the bedding of the sediments. The vein has been traced by
open-cuts for 2,000 feet. It consists of milky quartz in general barren,
but locally containing a little pyrrhotite, chalcopyrite, and other com-
mon sulphides.

On the Deadwood group the mineral deposit occupies a shear zone in
amphibolite. The shear zone strikes north and has been traced for a
length of 1,500 feet. The zone contains quartz stringers and sparsely
disseminated chalcopyrite and pyrrhotite.

Elkhorn Group (Locality 117)
References: Annual Report of the Minister of Mines, British Columbia, 1929 and
1930.

The Elkhorn group of four mineral claims is at an elevation of 3,500
feet west of the head of Hastings arm. The claims adjoin those of the
Saddle group.