Mine detail: Bell Group

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Location: Boulder County, Colorado, United States, North America
Lat / long: 40.03139, -105.33569
dep_id: 10013758
mrds_id: D010221
Commodity type: metallic
Major mineral: Gold, Silver
Trace mineral: Uranium
Operation type: Unknown
Deposit type: Vein
Production size: Small ammount of material produced
Development status: Past Producer
alteration: Silicification
Reporter: Banke, Carl M.
hrock_unit: Boulder Creek Granodiorite
hrock_type: Diorite
arock_unit: Boulder Creek Granodiorite
arock_type: Diorite
Structure: Front Range Uplift, Boulder Creek Batholith, Poorman Fault Zone, Maxwell Fault Zone (Breccia Reef)
tectonic: Central Cordillera (Southern Rocky Mountains)
References:
  • Deposit:: NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULL. 40, P. 81
  • Deposit:: LOVERING, T.S., AND GODDARD, E.N., 1950, GEOLOGY AND ORE DEPOSITS OF THE FRONT RANGE, COLORADO: USGS PROF. PAPER 223, P. 234-246
  • Deposit:: COLTON, R.B., 1978, GEOLOGIC MAP OF THE BOULDER-FORT COLLINS-GREELEY AREA, COLORADO: USGS MAP I-855-G
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