-105~

‘fracture or shear zones which strike mainly north 10 degrees
west to north 55 degrees west, and dip 45 degrees eB 75 degrees
southwest. As a rule the deposits are small, fracture-filling
veins less than 2 feet wide, but in places zones of veins and
replaced wall-rock up to 53 feet, and even wider, occur. As a
rule these wider zones are not well mineralized for the full
width and in places are mineralized only sparsely. The maximun
distance any deposit is reported to have been traced is about
350 feet and it appears that most have not been shown to be
continuous for any great lengths. A number of short tunnels
driven on the deposits do not usually show any better mineralized
sections.

Gold associated in places with arsenopyrite occurs up
to 0.64 ounce a ton on two properties (Yukon and Jessie) and on
the Empire property up to 0.78 ounce in a 5-inch stringer
containing no arsenopyrite. Silver, mainly with tetrahedrite and
to a lesser extent with galena, is fairly high on the Jessie,
Empire, and Snowshoe properties. As illustrative of the results ri

of hand sorting of the material from these deposits it is notable

that 3 tons shipped from the Empire property yielded 245 ounces
of silver a ton and 40 per cent lead. At least some possibilities
of profitable, small-scale mining appear to be indicated. ee
From a study of the deposits of this area some important |
information and deductions may be drawn. The deposits occur in
volcanic rocks and are abundant near the contact with the overlying

sedimentary shell. No deposits are known to occur in the sediments

and they decrease in number in the volcanics away from the contact.
The sedimentary rocks formerly extended over the deposits and
probably no great amount of erosion has taken place since their
The extent of erosion probably increases southward away

removal,

from the contact where also there is a decrease in number of deposits.