39

These veins consist of galena, sphalerite, pyrite, and tetrahedrite in
a gangue of quartz. They are very well mineralized on the surface and
in some places are practically solid sulphide. Surface exposures on the
upper vein assay up to 250 ounces in silver a ton. Underground the vein
is narrower and much lower in grade. The lower vein assays 150 ounces
or less in silver a ton. The upper vein is developed by open-cuts and a
drift adit 100 feet long. The lower vein is well exposed in open-cuts. A
crosscut adit 45 feet long has been driven to intersect the lower vein
but has not been driven far enough to reach its objective. These mineral
showings are quite attractive and should be developed further.

Scace or Feer

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xe
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Zz
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Figure 6. Sketch plan of lower showings on property of Bayview Mining Company,
mited.

Three veins have been explored on the Bayview group which adjoins
the Gold Cliff group on the west. The workings are about 4,000 feet
above sea-level. The veins are parallel to each other and to the contact
of the Coast Range batholith which here strikes west. One vein is at
the edge of the batholith and the other two in rock adjacent to the batho-
lith within 700 feet of the contact. The veins are individually 2 feet or
less in width and consist of pyrite, galena, sphalerite, and tetrahedrite, in
a gangue of quartz. The development consists chiefly of open-cuts from
some of which ore has been shipped. A total of 9 tons of ore shipped in
1925 assayed 170 ounces of silver per ton, 16 per cent lead, 21 per cent
zine, and a little more than a dollar in gold per ton.

The veins on the two groups contain shoots of ore that can be mined
and shipped without much concentration. They are easy of access and
close to Stewart. They warrant more thorough exploration.