Mine detail: Poorman Shaft

<< Back to the map

<< Back to browsing

Location: Custer County, Colorado, United States, North America
Lat / long: 38.12279, -105.32807
dep_id: 10012303
mrds_id: D007857
Commodity type: metallic
Major mineral: Silver
Minor mineral: Lead, Zinc
Operation type: Underground
Deposit type: Vein
Production size: Small ammount of material produced
Development status: Past Producer
ore: Galena, Sphalerite
gangue: Quartz, Clay
work_type: Underground
model: 82: Epithermal veins
alteration: Strong Argillization
ore_ctrl: Fault; Contact Between Trachyte And Gneiss
Reporter: Collins, Donna B.
arock_unit: Game Ridge Trachyte;Rosita Andesite; Tuff Underlying Trachyte
arock_type: Trachyte
Structure: Rosita Volcanic Center, Wet Mtns, California 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:: SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.
© 2010-2018 Lee C. Baker unless noted. All rights reserved.