Mine detail: Bonanza Mine

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Location: Custer County, Colorado, United States, North America
Lat / long: 38.08807, -105.33585
dep_id: 10012173
mrds_id: D007640
Commodity type: metallic
Major mineral: Silver
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
gangue: Barite, Quartz
work_type: Underground
alteration: None Reported; Possibly Mild Argillization
conc_proc: Fracture Filling
ore_ctrl: Mineralized Fault
Reporter: Collins, Donna B.
hrock_type: Rhyolite
arock_unit: Rhyolite Of Rosita Volcano;Rhyodacite Of Bald Mountain
arock_type: Rhyodacite
Structure: Rosita Volcanic Center, Wet Mtns, Volcanic Vent; Vein At Contact Of Two Units
tectonic: Central Cordillera (Southern Rocky Mtns)
disc_yr: 1882
References:
  • Deposit:: CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.
  • Deposit:: EMMONS, S.F., 1896, THE MINES OF CUSTER COUNTY, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 405-472.
  • Deposit:: SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAPS I-1081.
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