Mine detail: Nellie Mine

Previously called 'Sleeping Pet'

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Location: Custer County, Colorado, United States, North America
Lat / long: 38.11445, -105.32113
dep_id: 10012300
mrds_id: D007854
Commodity type: metallic
Major mineral: Silver
Minor mineral: Copper, Lead, Zinc
Operation type: Underground
Deposit type: Vein
Production size: Small ammount of material produced
Development status: Past Producer
ore: Galena, Sphalerite
gangue: Pyrite
work_type: Underground
model: 85: Polymetallic veins
alteration: Weak To Moderate Argillization
ore_ctrl: Fault Contact
Reporter: Collins, Donna B., Beach, Richard A.
hrock_type: Trachyte
arock_unit: Game Ridge Trachyte
arock_type: Trachyte
Structure: Rosita Volcanic Center, Wet Mtns, On Nellie Fault
tectonic: Central Cordillera (Southern Rocky Mtns)
dy_ba: <
disc_yr: 1895
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: 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 MAP I-1081.
  • Reserve-Resource:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.
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