230 
ECONOMIC GEOLOGY OF SILVERTON QUADRANGLE, [bull. 182. 
Particulars concerning the mineralogy of the ore of the Genesee- 
Vanderbilt are now difficult to obtain. It is said to have contained 
considerable lead from top to bottom, which statement, however, is 
not fully borne out by the records furnished by Mr. Schulz. Cosalite 
is recorded as having been an important constituent of the ore. Some 
small caves containing stalactites of pyrite occurred in the ore 
bodies, but it is not known at what depth. Specimens of ore said to 
have come from this mine and preserved in the mine office showed 
some very argentiferous bornite, a slightly argentiferous sulpho- 
bismuthite of lead containing a little copper and corresponding in 
Org Bodies 
Fig. 19.— Sketch plan showing changes in position of the Genesee- Vanderbilt ore bodies, with 
depth. X-Y, surface outcrop of ore break; V, (x, S, surface outcrop of oro bodies; M, O, position 
of same ore bodies on 300-foot level; P, iV, position of same ore bodies on 600-foot level; T, R, 
ore break on 600-foot level (after T. E. Schwarz). 
physical properties and appearance to cosalite, and some small crystals 
of ruby silver (proustite). 
The total output under the old Vanderbilt Company of Red Moun- 
tain is not known, although the Mint reports credit the mine with 
$72,672 in 1888. The output of the Genesee- Vanderbilt Company 
from 1891 to 1896 amounted to about 12,622 tons of ore, containing 
2,884 ounces of gold, 136,675 ounces of silver, 702,183 pounds of lead, 
and 30,520 pounds of copper. 
The water encountered in the Genesee- Vanderbilt was of the same 
corrosive character as that met with in the Yankee Girl and Guston. 
