Page 448 - calmining1890

424 REPORT OF THE STATE MINERALOGIST.

The Drummond Quartz Mine.
This property is located on the north half of Sec. 1, in T. 14 N.,
R. 10 E., M. D. M., which lies on the ridge between the north and south
branches of Shirt-tail Canon at an elevation of three thousand six
hundred feet, just west of the serpentine belt. The claim covers three
hundred and twenty acres United States patent, and includes several
other very promising veins besides the Drummond.
The course of the Drummond vein is about north 60 degrees west,
and the dip about 80 degrees northeasterly. The country rock is meta-
morphic slate, mica, chlorite, and talc schists, with occasional dikes of
diorite and porphyry.
The Drummond vein, so far as explored in workings, varies from two
to thirty feet between walls. The foot wall is altered slaty diorite, and
the hanging wall quartz diorite.
The mine is opened near the north end by a tunnel driven two hun-
dred and ten feet on the vein; and also by a crosscut tunnel two hundred
feet lower driven three hundred feet, and cutting the vein, which is at
that point twenty-one feet wide. From the main tunnel a level is driven
north in the foot wall about three hundred feet, and from this level cross-
cuts have been driven to the hanging wall, exposing a vein varying in
width from three to eighteen feet.
Going south the level is extended about one hundred and fifty feet,
from which crosscuts are driven, exposing a three-foot vein of ore next
to the hanging wall, and a six-inch streak on the foot wall. The space
between quartz is filled with gold-bearing porphyritic slate.
The walls at south crosscut No. 2 are thirty-one feet apart; from cross-
cut No. 2 a winze is sunk fifty feet on the ore vein next the hanging
wall to connect with the level driven on the vein from tunnel No. 3.
The length of the ore shoots has not been determined. Considerable
ore has been stoped from above the second level, and yielded about $7 a
ton. There are two twenty-ton Huntington mills on the property run
by steam (see sketch-plate showing workings).
The Eclipse is an east and west vein, about eighteen inches wide, and
probably a spur of the Drummond. A shaft eighty feet deep was sunk
on this vein, from which was extracted some very high-grade ore.
The Wolford vein is also an east and west vein, about ten inches wide,
and probably a spur of the Drummond. A shaft forty feet deep was
sunk on the vein, from which some high-grade ore was extracted.
The Drummond may be considered an important discovery, as it
promises to develop into a large and permanent mine. Numerous quartz
outcrops can be seen in the region south of the Drummond Mine. The
prospecting done on the Newsom Claims gave encouraging results.
North of the Drummond on Sec. 36, T. 15 N., R. 10 E., are several
promising prospects.
Located on the north side and near the bed of North Shirt-tail Canon,
is the Providencia Quartz Mine. This vein is about three feet wide, its
course northwest, dip 80 degrees northeast, the walls being hard meta-
morphic slate. A tunnel is driven northwest on the vein about eighty
feet, exposing a strong three-foot vein, showing free gold. The property
was purchased a few years ago by Prof. Wm. P. Blake, who secured a
United States patent, and left the property idle since.