Mine detail: Green Rock Mine

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Location: Larimer County, Colorado, United States, North America
Lat / long: 40.71248, -105.31476
dep_id: 10013967
mrds_id: D010544
mas_id: 80690067
Commodity type: metallic
Major mineral: Tungsten
Trace mineral: Molybdenum
Operation type: Underground
Production size: Small ammount of material produced
Development status: Past Producer
ore: Powellite, Scheelite
work_type: Underground
Reporter: Schwochow, Stephen D., Intermountain Field Operations Center (IFOC), Wilson, Anna B.
hrock_unit: Metamorphic Rocks--Biotite Gneiss, Schist, And Migmatite
hrock_type: Schist
arock_unit: Sherman Granite
arock_type: Granite
Structure: Front Range Uplift, Sherman Batholith, Poudre River Shear Zone, Skin Gulch Shear Zone
tectonic: Central Cordillera (Southern Rocky Mtns)
References:
  • Deposit:: COBB, H.S., 1960, TUNGSTEN MINES OF COLORADO: COLORADO METAL MINING FUND BD., P. 37.
  • Deposit:: BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT, GUNNISON, LAKE, LARIMER, PARK, AND SUMMIT COUNTIES, COLORADO: USBM IC-7748, P. 16.
  • Deposit:: TWETO, OGDEN, 1960, SCHEELITE IN THE PRECAMBRIAN GNEISSES OF COLORADO: ECON. GEOLOGY, V. 55, NO. 7, P. 1406-1428.
  • Deposit:: ABBOTT, J.T., 1976, GEOLOGIC MAP OF THE BIG NARROWS QUADRANGLE, LARIMER COUNTY, COLORADO: USGS MAP GQ-1323.
  • Production:: BELSER, 1956, P. 16.
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