COPPER SIEVER VEINS OF TELKVWAA DISTRICT. SAG

25 per cent. A sample across the_vein which is about 2% feet
wide assayed: gold, 0.14 0z.; silver, 26.9 0z.; copper, 14.6 per
cent.

No other gangue than quartz was found in any part of this
vein.

The alteration of the country rock immediately adjoining the
King vein is comparatively slight. The tuffs have lost their red-
dish color to some degree and have become somewhat greenish.
In polished sections they are seen to consist of fine-grained tufts
which have become silicified and chloritized with the introduction
of a small amount of epidote. The sulphides have been dis-
seminated in the adjoining rock in places somewhat plentifully.
The tuffs show their usual amount of very fine-grained hematite
and also some magnetite. As one follows the vein southwest
from the main shaft there is a notable increase in the amount of
epidote of the country rock, which increases still more in amount
west of the pinnacle where the magnetite ore occurs. This epi-
dote is always associated with a large amount of very coarse-
grained specularite. A similar increase in the amount of hematite
and epidote is observed in passing southwest from the King shaft
towards the Rainbow claim, and in this vicinity the concentration
of these two minerals is quite remarkable. The tuffs are veined
with them and numerous large spherical nodules are formed
which usually have the hematite crystals assembled in their
centers.

Closely associated with the King vein and located only 500
feet to the north is the Rainbow vein. It runs in a southwest
direction towards the west showing of the King vein. ‘This de-
posit consists of a network of small veins 2 or 3 inches in diam-
eter, which run promiscuously about the ridge but which have a
general trend in the direction of the south 45 degrees west and
pointing towards the west showing of the King vein. In places
the veins are confined to the joint plains and bedding.

These veins contain quartz, epidote, hematite, chalcopyrite,
magnetite, zinc blende and a white mineral associated with the
zinc blende believed to be a silver mineral.

The most plentiful mineral is the hematite which is in the form