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Properties East of Bear River
ORE MOUNTAIN MINING COMPANY, LIMITED

The holdings of Ore Mountain Mining Company are north of Bitter
creek and 1 to 2 miles east of Bear lake. The rocks are of the upper
part of the Bitter Creek formation. The contact with the overlying Bear
River formation is about 200 feet west of the lower showings and the
zone of dykes previously referred to lies about 500 feet south.

Some development work has been done on a galena-bearing vein in
sheared tuffaceous sediments at an elevation of 4,500 feet. This was
largely snow covered at the time of visit, and, therefore, the vein could
not be seen on the surface. An adit has been driven along this vein, but
shows only several narrow stringers of vein matter.

Several parallel veins are exposed in open-cuts and short adits at an
elevation of 3,300 feet. They strike north and dip steeply westward.
The exposures are on a flat area on the mountain side, and the strike
of the veins is along the hillside so that drift or crosscut adits must be
fairly long to attain moderate depths. One of the veins is locally 4 feet
wide and is a replacement vein in a shear zone. Pre-mineral and post-
mineral faults striking north are present and also post-mineral faults, with
small offsets, striking northeast. One of the latter faults is occupied by
a narrow dyke and offsets a vein 6 feet. The vein matter is rusty and
decomposed and primary minerals are rare. The veins may prove ta be
of importance, as according to Clothier they contain gold values in gold
and silver.1 A crosscut adit 150 feet long and 150 feet below the out-
crop of veins on the flat area has been driven eastward. It is highly
desirable that this be continued to intersect the veins so that they can
be explored at this depth.

TYEE GROUP

The claims of the Tyee group are at an elevation of 500 feet on
the east side of Bear river between Glacier and Bitter creeks. The
country rock is a stock of granodiorite intrusive into volcanic rocks. A
quartz vein 1 to 5 feet wide and 75 feet long is exposed by a shaft and
open-cuts. The vein strikes northwest, is vertical, and consists of quartz
and sulphides in approximately equal amounts by volume. The sulphide
is chiefly pyrite, but some chalcopyrite is present. A crosscut adit 60 feet
below the vein-outcrop, has not been driven far enough to reach the
vein. The vein matter is not of commercial grade, but locally assays
several dollars per ton in gold.

MAYFLOWER GROUP

The Mayflower group is 1,000 feet above sea-level east of Bear river
between Glacier and Bitter creeks and adjoins the Tyee group on the
east. The country rocks are tuffaceous sediments and tuffs of the lower
part of the Bear River formation. The stock of granodiorite on which
the Tyee is located outcrops just below the Mayflower claims.

1Ann. Rept., Minister of Mines, B.C., 1925, p. 92.