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much zine and a little silver and lead. The face of the McPherson adit
would have to be advanced a little over 1,200 feet to reach a position about
600 feet vertically below the No. 2 shaft.

The Fault Plane vein-lode has been drifted on for 400 feet on the
300 level, for 620 feet on the 500 level, and for 360 feet on the 600 level.
A steeply dipping branch vein from the Fault Plane vein-lode is intersected
on the 600 level between the shaft and the 360-foot drift. This vein, known
as the “ Little Stranger”, has been drifted on for 80 feet. There are three
stopes on the Fault Plane vein-lode, two above the 500 level and one above
the 300 level. Where seen on the 500 level this vein-lode contains from two
to seven parallel fissures across widths of from 1 to 3 feet. There is,
however, very little brecciation of the rhyolite and tuff beds, and the vein
deposits are narrow and few.

A small vein known as the Gerrard is intersected by a crosscut 75 feet
north of the Ashman vein on the 500 level. Along a 50-foot drift it
averages 3 inches in width and consists of carbonate with a little quartz,
arsenopyrite, and sphalerite.

Another vein-lode known as the Gill is exposed in an open-cut at
elevation 3,925 feet, 300 feet east of the Thompson portal, where there
are five vertical fissures spaced a foot apart with vein fillings from 1 to
3 inches wide occupying the outside fissures. The veins consist of quartz
and carbonate with considerable sphalerite and a little arsenopyrite. The
continuity of the lode has not yet been determined.

Vein quartz seems to have been deposited throughout the period of
mineralization of the Ashman, Henderson, and Fault Plane vein-lodes.
Of the metallic minerals, pyrite and arsenopyrite were introduced first
and galena, sphalerite, tetrahedrite, ruby silver (pyrargyrite), and chal-
copyrite followed. Deposition of carbonate, in the form of calcite and
rhodochrosite stringers and veins, in part preceded and in part followed
the period of metallic mineralization.

The Dome vein-lode lies 1,300 to 1,400 feet southeast of the Henderson.
It strikes north 65 degrees east, dips 75 to 85 degrees northwest, and is
well defined for a distance of 700 feet, from the portal of a 200-foot adit
at elevation 4,150 feet to elevation 4,350 feet. Below the adit the lode
splits into two fissured zones, which continue down the slope at a small
angle to each other for a distance of several hundred feet. Southwest of
the split the fissures carry occasional small veins, but none of importance
was seen. At the adit the vein-lode ranges from 7 feet at the portal to
3 feet in width at the face of the drift. Dacite flow breccia is sheeted by
eight parallel fissures at the portal, but several of these join farther within
the adit. The fissures contain sulphide veins up to 3 inches wide. The
wall-rock is altered and partly replaced by sulphides, and cross fractures
contain sulphide stringers. The ore minerals, in order of abundance, are
arsenopyrite, sphalerite, pyrite, galena, chalcopyrite, and tetrahedrite.
A little vein quartz is associated with these sulphides. Above the adit the
rock is strongly fissured over widths ranging from 1 to 6 feet, and one or
more sulphide veins ranging from 2 to 10 inches in width may be seen in
each of the open-cuts up to an elevation of 4,350 feet. Farther northeast
the vein-lode is concealed beneath a flat, grassy meadow. Parts of the
Dome lode could supply a fair grade of silver-lead-zine ore.