A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...

THE GEOLOGICAL OCCUBRENCE OF ANTIMONY ORES. 55
RUSSIA.
Small quantities of antimony ore have been found.
NORTH AMERICA.*
Kern County, California.—Veins containing stibnite occur; the
gangue is usually quartz. (A.)
Humboldt County, Nevada.—Antimony deposits have been worked
for many years in veins with quartz gangue. The most important
of the American mines are the Beulah and the Genesee, at Big Creek,
near Austin. Pure stibnite, attaining to a width of three feet, has
been found in some of the richest veins. (A.)
Sevier County, Arkansas.—The veins, with quartz gangue, appear
to be generally interbedded in Trenton Shales and to lie along
anticlinal axes. (A.)
Iron County, Utah.—Disseminations of stibnite are found in
sandstone and conglomerate, following the planes of stratification.
They are generally masses of radiating needles, occurring in sandstone
and between the boulders of conglomerate. Blake thinks that
the ore has been crystallised out from descending solutions. Above
the sandstone eruptive rocks are found. (C.)
In Sonora, senarmontite ore has been worked, but it was soon
exhausted.
York County, New Brunswick, Canada.—Veins of quartz or of
quartz and calcite carrying stibnite occur over several square miles.
The wall rocks are clay slates and sandstones of Cambro-Silurian age.
Besides those described above, the following localities may be
mentioned: California (Havilah, Bousby, Erskine Creek, Grace
Darling, Padre, San Emidio, Crowell); Utah (Garfield County);
Idaho (Kingston); South Dakota; Mexico; Canada (Rawdon, Nova
Scotia).
SOUTH AMERICA.
Antimony ore ha's been found in the following places :—Nicaragua,
Chili, Peru (district Yauli and Huancavelica), t Bolivia (at S. Pablo,
near Lipez, and in the vicinity of Tasna), Argentine Confederation
(at Charillos, in dept S. Antonio de los Cobres, in prov. Salta).
* Taken from The Ore Deposits of the United States and Canada, by Professor
Kemp, 1900.
t Stibnite is here found associated with quicksilver deposits—a case of paragenesis.