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The sediments are usually highly pyritized for several hundred feet
from the contact and in the neighbourhood of small dykes which are of
frequent occurrence, and it is in this area that the claims are mostly
located. The contact dips to the east at 50 to 60 degrees along this side
of the mountain and better prospecting ground would probably be in
places where it becomes flatter, that is, where the sediments are still in
pace on the sloping roof of the batholith rather than deep on the eroded
sides.

MINING PROPERTIES NORTH OF BULKLEY RIVER: SILVER-LEAD-ZINC
PROPERTIES.

Properties on Glen Mountain.

SILVER STANDARD MINE. The Silver Standard mine is situated on the
northwest side of Glen mountain, about 6 miles by road north of New
Hazelton station, from where the ore is shipped. This mine started to
ship in 19138 and up to June, 1917, had shipped 2,229 tons of silver-lead
ore carrying 746,259 pounds of lead, 516-8 ounces of gold, and 304,411
ounces of silver, with an average of 20-3 per cent of zinc. In 1916 and
to the end of May, 1917,393-9 tons of zine ore were shipped, which averaged
43-16 per cent of zinc, 0-24 ounce of gold, and 60-02 ounces of silver,
making a total of 328,050-5 ounces of silver. During the latter part of
1917 the mine was shut down and all energies devoted to putting in a
50-ton mill to handle the large amount of second grade ore opened up in
the development of the high grade shoots; this mill will be running in the
spring of 1918. =

General Description. There are nine veins on the property (See Map
1733), but only two of them have been important producers so far,
although some of the others are known to contain high grade ore as well
as the low grade material which is common to all the veins. The veins
are numbered consecutively from west to east across the mountain. The
strikes vary in detail, partly due to faulting, but the veins are roughly
parallel and strike north 20 degrees to 35 degrees east (magnetic) with
steep dips to the southeast.

The bulk of the ore taken out to date has been obtained from the
main vein which occurs between veins Nos. 6 and 7.

About the middle of the property this main vein splits into two parts
with apex to the south and an angle of about 10 degrees between the
strikes of the two parts; these parts are known as the Hang-wall and Foot-
wall veins respectively (Figure 5).

A shaft has been sunk for 400 feet on the Foot-wall vein about 250 feet
north of the intersection, and levels have been developed at 150 feet, 250
feet, and at 400 feet from the top of the shaft. A crosscut tunnel was
driven to intersect the main vein at the 250-foot level, 300 feet south of the
shaft, and then from near the shaft a crosscut was driven 360 feet to intersect
No. 7 vein. The tunnels intersect all the veins except Nos. 1, 2, and 8;
these veins are only known from surface cuts and strippings.

Description of Veins. No. 1 vein has been proved for 1,500 feet by
open-cuts along the strike and an ore-shoot 100 feet long by 20 inches
average width gave an average sample assaying: gold, 0-35 ounce; silver,
10-72 ounces. The samples and assays are shown on the table page 28.