Mine detail: Polonia Shaft

Previously called 'Twenty-six-Polonia veinBrittle Silver'

<< Back to the map

<< Back to browsing

Location: Custer County, Colorado, United States, North America
Lat / long: 38.1114, -105.3289
dep_id: 10012302
mrds_id: D007856
Commodity type: metallic
Major mineral: Silver
Minor mineral: Lead, Copper, Zinc
Trace mineral: Iron
Operation type: Underground
Production size: Small ammount of material produced
Development status: Past Producer
ore: Chalcopyrite, Galena, Pyrite, Sphalerite, Argentite, Chalcocite, Stephanite
gangue: Barite, Calcite
work_type: Underground
model: 82: Epithermal veins
alteration: Weakly Argillized
ore_ctrl: Mineralized Pebble Dike
Reporter: Collins, Donna B., Beach, RIchard A.
hrock_unit: Game Ridge Trachyte;Rosita Andesite On Other Side Of Fault
hrock_type: Trachyte
Structure: Rosita Volcanic Center, Wet Mtns, On Twenty-Six Fault Which Strikes East-West
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, 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 MAP I-1081.
  • Reserve-Resource:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.
© 2010-2018 Lee C. Baker unless noted. All rights reserved.