ransome.] DEPOSITS OF RED MOUNTAIN REGION. 223 
and constant attention was required to prevent the destruction of the 
pumps and column by corrosion. 
When visited in 1899 the mine was filled with water to the second 
level, 114 feel below the surface. The level of this water fluctuates 
with the seasons, and in spring sometimes rises to the first level, 50 feet 
from the surface. As the deeper workings are wholly inaccessible, 
the following description of the ore bodies is drawn from the annual 
reports of the superintendents, Messrs. Schwarz and Harvey, and 
from personal conversation with men who worked in the mine. 
In their general shape the ore bodies resembled those of the Yankee 
Girl. They were roughly ellipsoidal masses standing nearly vertical, 
and consisting of nearly solid ore with very little gangue, surrounded 
b} 7 altered country rock impregnated with pyrite. The actual si/esof 
these masses of ore are difficult 1o ascertain at the presenl time. Some 
of the slopes were nearly 200 feet in length and several hundred feet 
in height. The width of the ore varied greatly in differenl bodies and 
in different portions of the same ore mass. Widths of from 20 to -\^ 
feet appear to have been not uncommon. 
The ore-body stope on the seventh Level was, in L892, 45 feet in 
length and 94 feet average height. The width of the ore for a distance 
of 20 feet was 1 1 feet; elsewhere less, and irregular. The ore from this 
stope carried from 20 to 80 ounces of silver and 0.3 ounce of gold per 
.ton, with from 5 to 8 per cent of copper. The middle slope on the 
same level had a length of IK; feet, an average height of 87 feet, and 
an average widtli of ore of 22 feet. Its ore carried from 15 to 35 
ounces of silver and 0.2 ounce of gold per ton. These are given 
simply as examples of typical slopes which produced large amounts of 
rather low-grade ore. 
These ore bodies usually occurred along what was termed the "ore 
break," a zone of altered, disturbed, and more or less broken country 
rock, intersected by slip planes and containing much kaolin, as well 
as soft attrition material. This ore break is said to traverse the 
Guston claim from end to end, which would give it a course of from 
20° to 30° east of north and to be, in places at least, nearly GO feet in 
width. From levels 2 to 7, a depth of 364 feet, this ore break dips 
steeply to the east; but just below the seventh level a slip or fault was 
encountered dipping 45° to the west, which cut off the ore entirely. 
By following the soft claj T gouge which occupied this fracture plane 
the ore break was found again below, tying from 30 to 50 feet to the 
westward. It here dipped steeply westward and did not carry much 
ore. It was not until the tenth level was reached that its dip again 
became easterty and it resumed the character which it had had above 
the seventh level. The ore in this level also was better, or at least in 
larger bodies, than anything hitherto found below the seventh level. 
The ellipsoidal or irregular ore bodies were nearly always found in 
connection with this ore break, but thej^ were most irregularly placed 
and were found only bj r persistent and thorough prospecting, partly 
