uansome] DEPOSITS OF RED MOUNTAIN REGION. 227 
According to Mr. Terrill, at I3resent in charge of the mine, good ore, 
consisting of argentiferous bornite, was struck in the fourteenth or 
bottom level, but was never extracted. Had there been any consid- 
erable body of high-grade ore revealed, however, it is hardl}' probable 
that the mine would have shut down, no considerable loss in its opera- 
tion having been incurred and no assessments having been levied on 
the shareholders when work ceased. 
Mr. S. F. Emmons made a brief visit to the mine in 1888 and has 
recorded his observations in unpublished notes. He visited a new 
find of ore on the third level, which had been overlooked by the former 
owners. This was a solid mass of chalcopyrite mixed with tetrahe- 
drite and galena and carrying up to 750 ounces of silver per ton. He 
found that this ore bod}', with a strike of N. 30° E., and dipping from 
30° to 45° to the northwest, was limited on its foot-wall side by a dis- 
tinct inane showing fault movement. According to Mr. Emmons, 
the sheeted structure of the original country rock, which had been 
replaced for a width of about 10 feet b} r ore, Avas still recognizable in 
the latter. The ore body, which was not more than 10 or 15 feet long, 
graded into quartz, clouded with snow-white kaolin, and this in turn 
into altered countiy rock or "white rock." 
Genesee- Van<h rbilt mine. — The original Vanderbill shaft was sunk 
just southwest of the Yankee Girl, in one of the characterisl Lc siliceous 
knolls of the district. This consists of a hard, (jiiartz-like rock, in 
which can still be detected outlines of porphyritic crystals of feldspar, 
now wholly decomposed, In some places the original rock is practi- 
cally wholly replaced by quartz. In the Mint report for 1882 it is 
noted that the Genesee, then opened by two shafts 15 feel and 20 
feet deep, showed a body of galena 3 feet thick, associated with "cop- 
per," the whole carrying from 15 to 40 ounces of silver per ton. The 
"copper" was probably chalcopyrite or tetrahedrite. In 1888 the 
product of the Vanderbilt as derived from the same source was 
$72,672. It was subsequently Pound thai t lie Vanderbilt and Genesee 
ore bodies were identical, or at least so closely associated that it was 
impracticable to work them separately, and the mines were therefore 
consolidated. The present workings (fig. 17), begun in 1891, consist 
of a tunnel 820 feel in length, connecting with the old shaft through 
stopes, and a second shaft, 700 feet in depth, sunk near the end of the 
adit tunnel. Levels were run at 300, 400, 500, 600, and 700 feet below 
the tunnel level. In 1899 this shaft was filled with water to within a 
few feet of the collar. Although the mine has produced some good 
ore, it is said to have been on the whole unprofitable. The ore was of 
a lower grade than that in the Guston and Yankee Girl, and the profits 
accruing from the exploitation of one ore body were usually more than 
expended in searching for the next one. Work was finally suspended 
in 1896. 
In 1899 a little ore, consisting chiefly of galena and sphalerite, was 
being taken out by leasers above the adit level. Access was gained 
