Mine detail: Amethyst Mine

Previously called ''

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Location

Lat / long:

37.88501, -106.93784

Resource(M)

Primary:	Silver, Lead, Gold, Zinc
Secondary:	Copper, Cadmium
Tertiary:	Arsenic, Antimony
Ore:	Anglesite, Cerargyrite, Chalcocite, Chalcopyrite, Gold, Greenockite, Pyrite, Silver, Sphalerite, Tennantite, Tetrahedrite
Gangue:	Amethyst, Barite, Chlorite, Goslarite, Jarosite, Limonite, Quartz, Wad
Discovery year:	1891

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1891
Last production ended:	1976

Geology

Host rock:	Campbell Mtn. Member Of Bachelor Mtn. Rhyolite;Willow Creek Member Of Bachelor Mtn. Rhyolite
Host type:	Rhyolite
Associated rock:	Campbell Mtn. Member Of Bachelor Mtn. Rhyolite;Willow Creek Member Of Bachelor Mtn. Rhyolite
Associated type:	Rhyolite
Structure:	San Juan Volcanic Field; La Garita, Creede, And Bachelor Calderas, Creede Graben; Amethyst Fault Zone
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Chloritization, Silicification, Argillization; Fe-Mn Oxides

References

MRDS	D007964
DEP	10087590
Reference	{Deposit:: EMMONS, W.H., AND LARSEN, E.S. 1923, GEOLOGY AND ORE DEPOSITS OF THE CREEDE DISTRICT, COLORADO: USGS BULL. 718, 198 P.}{Deposit:: STEVEN, T.A., AND RATTE, J.C., 1965, GEOLOGY AND STRUCTURAL CONTROL OF ORE DEPOSITION IN THE CREEDE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 487, 90 P.}{Deposit:: LINDEMANN, J.W., AND OTHERS, EDS., 1981, FIELD TRIP NOTES, CREEDE MINING DISTRICT, SAN JUAN VOLCANIC PROVINCE, COLORADO: DENVER REGIONAL EXPLORATION GEOLOGISTS SOC. GUIDEBOOK}{Production:: CO DIV. MINES ANN. OPERATOR REPTS.}
Reporter	Schwochow, Stephen D.