| Location: | Mineral County, Colorado, United States, North America |
| Lat / long: | 37.87057, -106.92951 |
| dep_id: | 10012365 |
| mrds_id: | D007965 |
| Commodity type: | metallic |
| Major mineral: | Zinc, Silver, Lead |
| Minor mineral: | Copper, Gold |
| Trace mineral: | Antimony, Manganese |
| Operation type: | Unknown |
| Production size: | Small ammount of material produced |
| Development status: | Past Producer |
| ore: | Acanthite, Anglesite, Cerargyrite, Pyrite, Pyromorphite, Silver, Sphalerite, Tetrahedrite |
| gangue: | Amethyst, Barite, Chlorite, Hematite, Limonite, Quartz, Rhodochrosite, Wad |
| work_type: | Underground |
| alteration: | Chloritization, Silicification, Argillization; Fe-Mn Oxides |
| conc_proc: | Pressure From Stock Beneath Bachelor Caldera Reactivated Keystone Graben And Started A North-To-South-Flowing, Freely Convecting Hydrothermal System Of Sulfate-Rich Solutions That Deposited Ore And Gangue Near Top Of Convecting Cell By Hypogene Enrichment Process. Boiling, With Loss Of Acid Constituents, And Resulting Rise In Ph Caused Precipitation Of Ores And Formation Of Intensely Altered Sericitic Cap Above Ore. Cap Is Actually Coalescence Of Alteration Fans Spreading Upward And Outward Thru Fractured And Porous Rock In Main Fault Zones And Along Parallel And Antithetic Fractures In Hanging Wall. |
| ore_ctrl: | Amethyst Fault, Ancestral Amethyst Fault, Subparallel And Antithetic Hanging-Wall Fractures |
| Reporter: | Schwochow, Stephen D. |
| hrock_unit: | Campbell Mtn. Member Of Bachelor Mtn. Rhyolite;Willow Creek Member Of Bachelor Mtn. Rhyolite |
| hrock_type: | Rhyolite |
| arock_unit: | Campbell Mtn. Member Of Bachelor Mtn. Rhyolite;Willow Creek Member Of Bachelor Mtn. Rhyolite |
| arock_type: | Rhyolite |
| Structure: | San Juan Volcanic Field; La Garita, Creede, And Bachelor Calderas, Creede Graben; Amethyst Fault Zone |
| tectonic: | Central Cordillera (Southern Rocky Mtns) |
| Year first produced: | 1891 |
| disc_yr: | 1891 |
| discr: | J.C. Mackenzie, W.V. Mcgilliard |
| 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
- Production:: 1903-06 & 1891-1912 CUMULATIVES FROM EMMONS & LARSEN (1923); 1916-42 FROM CO DIV. MINES ANN. OPERATORS REPTS.
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