Mine detail: Seneca Tunnel

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Location: Custer County, Colorado, United States, North America
Lat / long: 38.11362, -105.34057
dep_id: 10012307
mrds_id: D007863
Commodity type: metallic
Major mineral: Silver
Minor mineral: Gold
Operation type: Underground
Deposit type: Vein
Production size: Small ammount of material produced
Development status: Prospect
ore: Pyrite, Galena
gangue: Quartz
work_type: Underground
model: 82: Epithermal veins
alteration: Strongly Argillized; Bleached
ore_ctrl: Fault Trending Northeast, Trachyte Dike (?)
Reporter: Collins, Donna B.
hrock_unit: Rosita Andesite;Game Ridge Trachyte, Rhyolite Of Rosita Volcano
hrock_type: Andesite,Volcanic Breccia (Agglomerate)
arock_type: Rhyolite,Trachyte
Structure: Rosita Volcanic Center, Wet Mtns, Fault Trending Northeast
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.
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