Mine detail: Preston Gold Mine

Previously called 'BismuthChlorideMotherMajorDr. EmmaJudge'

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Location

Lat / long: 38.1514, -105.4514

Resource(M)

Primary: Silver, Gold
Ore: Argentite
Gangue: Illite, Quartz
Orebody form: Breccia Pipe
Discovery year: 1902

Production

Operation type: Underground
Production size: Small
Development status: Past Producer
First production started: 1903
Last production ended: 1907

Geology

Host type:Volcanic Breccia (Agglomerate),Rhyolite
Structure:Rosita Volcanic Center, Wet Mtns, Concentric Faults And Fractures
Tectonic:Central Cordillera (Southern Rocky Mtns)
Alteration processes:Strongly Argillized

References

MRDSD008059
DEP10012432
Reference{Deposit:: SHARP, W.N., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081, 1:24,000.}{Deposit:: COLORADO DIVISION MINES, 1981, INSPECTION RECORDS}
ReporterCollins, Donna L.