115

gold. The valley of upper American creek appears to have been very little
eroded by the last Pleistocene glaciation and, therefore, oxidized matter
may be more prevalent and may extend to greater depths than in most
other parts of Portland Canal area.

Fraser Group (Locality 100)

References: Annual Report of the Minister of Mines, British Columbia, 1919, 1921,
1925, and 1926.

The Fraser group of claims is on the east side of Kate Ryan creek
3 miles above its junction with Marmot river. On this property an area of
volcanic rocks 1,000 feet across is heavily impregnated with pyrite, pyrrho-
tite, and some arsenopyrite and chalcopyrite. There are also several quartz
veins in the rusty area. | |

Galena Farm Group (Locality 33)

References: Annual Report of the Minister of ‘Mines, British Columbia, 1911, 1925,
1927, 1929, and 1930; Geol. Surv., Canada, Memoirs 32 and 159.

The Galena Farm group is east of American creek near its mouth. A
narrow, galena-bearing quartz vein has been traced several hundred feet
in argillite on the Galena Farm claim. On the Keystone claim a silicified
shear zone in volcanic rocks contains some galena.

George Copper Group (Locality 28)

References: Annual Report of the Minister of Mines, British Columbia, 1914, 1915,
1917, 1918, 1919, 1920, 1922, 1925, 1926, 1927, 1928, and 1929; Geol. Surv., Can-
ada, Memoirs 32 and 159; Econ. Geol., vol. 23, pp. 193-208.

The George Copper group of mineral claims is on a precipitous
mountain slope south of upper Bear river and about 20 miles by road and
trail from Stewart.

The first development work was done on the lowest mineral exposure
and consisted of stripping and an adit. This deposit is of large dimensions,
but the grade was not considered high enough to warrant extensive develop-
ment work. Attention was then directed to mineral showings higher on
the mountain side. ‘These were explored by open-cuts. Other mineral
showings of merit have not been broken into and little is known of them
except that their mineralization and size approximate that of the better
known veins. The Consolidated Mining and Smelting Company of Canada
in the autumn of 1927 began diamond drilling and in the next two years
bored several long drill holes. Nothing has been done on the property
since 1929.

The country rocks at the George Copper mine are volcanics of the
Hazelton group and probably are in the upper half of this group in Bear
River district. They are chiefly massive andesite flows mainly green or grey
but in some places exhibiting purple or red hues, and are approximately
flat-lying. Dykes are not uncommon. At the lowest mineral showing a
band of argillites is intercalated with the volcanic members. The band is