STATE GEOLOGIST II5

The Montezinna Mine.--VQry simiar in many respects to
the preceding, but with other essentially different' features, is a
large exposure high up the steep mountain side, near the mid-
dle of the line between sections i6 and 17, 2 S , 23 W. This,
formerly worked as the Montezuma mine, but now abandoned,
consists of an immense mass of quartz protruding from a bank
of talcose slates. Through the quartz are imbedded crystals of
the same material. Some of these crystals are very large and
perfectly formed, and beautiful examples of twinning are fre-
quent. The slates dip S., 31^ E., 25^. The relations of the
quartz to the enclosing rocks are not readily .discernible, but
this seems to be due to mere local accumulation in the form of
an irregular mound. The mining development, July 25, 1887,
consisted of a shaft ninety feet in depth and an adit of 100
feet starting at the level of the shaft mouth. The shaft was
full of water, and the adit level was seriously obstructed by de-
bris from the roof. No ore appears upon the surface. A small
quantity of selected mineral was in the ore-house. This ore is
of a character well worth pursuing, as it carries considerable
lead and some high grade silver minerals.
Silver City. — In section 30, 2 S., 23 W., the development
of the few mines in the district led to great expectations, and
a small but admirably planned town site was laid out at a
convenient point for a base of supplies.
The Minnesota Mine. — At the eastern end of the town of
Silver City, and upon the main road from Hot Springs to Mt.
