Mine detail: Alpha Mine

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Location: Mineral County, Colorado, United States, North America
Lat / long: 37.84501, -106.96312
dep_id: 10012325
mrds_id: D007886
Commodity type: metallic
Major mineral: Silver
Trace mineral: Antimony, Copper, Lead, Zinc
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
ore: Cerargyrite, Silver
gangue: Amethyst, Barite, Chalcanthite, Limonite, Pyrite, Quartz, Stephanite, Stibnite
work_type: Underground
alteration: Bleaching, Variable Silicification And Argillization
ore_ctrl: Sheeted Zones In Hanging Wall Of A-C Fault, Higher Grade Ore Near Offshoot Faults
Reporter: Schwochow, Stephen D.
hrock_unit: Campbell Mtn. Member Of Bachelor Mtn. Rhyolite;Fisher Quartz Latite
hrock_type: Rhyolite
arock_unit: Campbell Mtn. Member Of Bachelor Mtn. Rhyolite;Fisher Quartz Latite
arock_type: Rhyolite,Quartz Latite
Structure: San Juan Volcanic Field; La Garita, Creede, And Bachelor Calderas, Alpha-Corsair Fault; Creede Graben
tectonic: Central Cordillera (Southern Rocky Mtns)
Year first produced: 1892
disc_yr: 1883
discr: J.C. Mackenzie
References:
  • 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
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