HA.NsoME.] DEPOSITS OF RED MOUNTAIN REGION. 231 
Alexandra mine. — This is situated on the slope of Red Mountain, 
a few hundred feet above the Guston. The earlier workings are in 
one of the siliceous mounds common in this region, this one forming 
a small, elongated ridge, striking S. 85° W. The upper workings are 
reached through a tunnel. These seem to have two or more of the 
usual lenticular, nearly vertical ore bodies. One small one, stoped 
at the tunnel level, was elliptical in plan, the longer diameter strik- 
ing N. 35° W. The ore pinched at the ends, but a small fissure, 
filled with kaolinite, can be seen continuing on into the country 
rock. The ore left in this stope is a fine-grained aggregate of pyrite, 
galena, and sphalerite, with specks of kaolinite. The country rock 
near the ore bodies is much altered, contains much kaolinite, and 
is thickly impregnated with fine pyrite. The ore is, in part at least. 
a replacement of the andesitic country rock. 
About 400 feet below this woikings is a second tunnel, from which 
issues a strong stream of highly ferruginous water. This tunnel is 
now only partly accessible. It runs through a mass of bleached and 
altered andesitic breccia, now changed in places to an aggregate of 
barite, kaolinite, and pyrite. As the mine was abandoned in L899 
or L900, no information could be gained concerning its output or the 
portions of the workings not now open. 
Grand Prize mine. — This property, a tew hundred yards north of 
and about 150 lower than the upper Alexandra tunnel, is abandoned 
and at present wholly inaccessible. Its dump shows the usual mate- 
rials common to the mines of the vicinity. 
National Belli mine.* — The croppings of the bleached and silicified 
country rock associate* I with this ore body form a prominent knoll, 
over 200 feet in height, on the northwestern outskirts of the settle- 
ment of Red Mountain. The principal mine buildings, adits, and 
main shaft (490 feet deep), are on the eastern side of this knob, close 
to the railway. The mine was (dosed and deserted in 181)7, and the 
superficial workings only were accessible. A plan of* the workings, 
from a mine map made in 1890, is shown in PI. XVI. 
The first extensive development was in L883, when about 980 tons 
of ore were produced, valued at nearly 870,000. This occurred chiefly 
in an oxidized form in caves, as carbonate of lead, one of which, 
occurring about 22 feet below No. 2 level (fig. 20), is known to have 
been 40 feet long, 20 feet wide, and 10 feet high. This cave ore car- 
ried from 5 to 7 ounces of silver and from 15 to 60 per cent of lead. 
Tor L890 the product is given as 887,591, of which $4,500 was in gold, 
$29,091 in silver at coinage value, and $54,000 in copper. It is evi- 
dent that the output for this year was chiefly from the lower workings, 
1 This mine is now of ten called the "American Belle mine, " from the name of the company 
which last opei*ated it, but the company's reports always refer to it under its original name, 
National Belle. The attempts sometimes made to change the names of mines with change of 
ownership are usually to be deplored, especially when, as in this case, the old name is well 
known in miner alogical literature. 
