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ore mined, the approximate production was 1,100 ounces of gold,
626,000 ounces silver, 1,225,000 pounds of lead, and 1,400,000
pounds of zinc with a gross value of $500,000. The lead
concentrates carried 200 to 225 ounces of silver a ton and the
zine concentrates 80 to 125 ounces. When closed in 1923 prices
for lead and zine ranged above 6 cents a pound and silver was
above 55 cents an ounce, so that it seoms improbable that similar
ore could be mined at a profit unless higher metal prices
prevailed. In O'Neill's assay plans it is notable, however, that
No. 1 vein carries 0.435 ounce in gold over 2 to 5 fect, and a
shoot 100 feet long and 20 inches wide averaged 0.35 ounce of
gold and 10.72 ounces of silver a ton. Moreover, 2,600 tons of
high-grade ore shipped during earlier years of operation averaged
about 0.25 ounce of gold and 125 ounces of silver. Therefore,
the gold content of some of the veins may be sufficient, in view
of the higher price prevailing for gold, to permit of profitable
mining.

There are seven fissure replacement veins that are

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nearly parallel, steeply dipping, and cut across the bedding in

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sedimentary tuffs. They lie 500 to 1,500 feet away from a grano- He!
diorite porphyry mass. The ore was secured from shoots in two or
more of these deposits. a,

Silver Cup. A mill was constructed on this property and 5,710

1 Duke Mining Company, O'Neill, J.J.: Mem. 110, p.d4; Ann. Repts.
Minister of Mines, B.C., 1929, p. 158: 1928, etc.

tons were mined and milled to produce 571 tons of concentrates
averaging 25 to 30 per cent lead, 16 to 18 per cent zinc, and
126 to 153 ounces of silver a ton. The mill feed for one month
assayed: 14.7 ounces of silver a ton, 3.5 per cent lead, and
4.00 per cent zinc; and for the second month, 19.6 ounces of

silver a ton and 3.96 per cent lead and 6.85 per cen” zinc.

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