Where a reading of the aneroid indicated 3,300 feet. The formation in
which the Coyote vein has formed is micaceous and hornblende schist and
gneissoid rock; hornblende granite and dikes of diorite also occur in
the vicinity of the vein. The Coyote Mine is a quartz vein from 2 to 4
feet in width. The rock is iron stained and occasionally shows free
gold. The vein is developed by two shafts, one about 20 and the other
nearly 80 feet in depth, and strikes 5° north of east, having a dip of
46° to the south. The vein appeared to cut the formation at a small
angle. A fault, which has occurred within the vein, had evidently
puzzled the owners, as at the bottom of the 20-foot shaft they had
developed 8 feet of what looked like solid quartz. The vein is really
but 4 feet in width at that point, but the fault cutting downward at an
angle of 45° and crossing the strike of the vein at an angle of 27° had
allowed the hanging wall side of the fault to slip downward, thus
doubling the width of quartz, which was much shattered. The miners had
quit work, leaving what they considered well enough alone. In the deeper
shaft the fault had carried the hanging wall down and to the east a few
feet, and the vein was lost altogether. A short drift had been run into
the hanging wall, but not finding the vein, work had been suspended. The
vein lies on the foot wall side and not more than 4 or 5 feet from the
line of the slip.
[Illustration: _FAULT OF COYOTE MINE
COTTONWOOD SPRINGS_]