Mine detail: Julianna Mine

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Location: Custer County, Colorado, United States, North America
Lat / long: 38.12307, -105.32418
dep_id: 10012296
mrds_id: D007849
Commodity type: metallic
Major mineral: Silver
Operation type: Underground
Deposit type: Vein
Production size: Small ammount of material produced
Development status: Past Producer
ore: Galena, Sphalerite
gangue: Quartz
work_type: Underground
model: 82: Epithermal veins
alteration: Weak Argillization
ore_ctrl: Faults; Possibly Andesite, Trachyte Contact; Mineralized Fissures
Reporter: Collins, Donna B.
hrock_type: Andesite
arock_unit: Rosita Andesite; Breccia;Game Ridge Trachyte In Dikes And Sheets
arock_type: Andesite
Structure: Rosita Volcanic Center, Wet Mtns, Small Dikes And Faults
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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