Mine detail: San Francisco Mine

<< Back to the map

<< Back to browsing

Location: Custer County, Colorado, United States, North America
Lat / long: 38.11612, -105.35807
dep_id: 10012206
mrds_id: D007681
Commodity type: metallic
Major mineral: Silver
Operation type: Underground
Deposit type: Vein
Production size: Small ammount of material produced
Development status: Past Producer
model: 82: Epithermal veins
alteration: Weakly Argillized At Junction Of Two Veins
ore_ctrl: Junction Of Two Veins, Nearby Trachyte Dikes
Reporter: Collins, Donna B.
hrock_unit: Bunker Trachyandesite;Game Ridge Trachyte
hrock_type: Trachyandesite
Structure: Rosita Volcanic Center, Wet Mtns, Two Faults (Veins) Intersect At Nearly Right Angles; Other Faults In Area
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.
© 2010-2018 Lee C. Baker unless noted. All rights reserved.