Mine detail: Four Claim Group

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Location: Fremont County, Colorado, United States, North America
Lat / long: 38.62722, -105.51169
dep_id: 10013092
mrds_id: D009190
Commodity type: metallic
Major mineral: Tungsten
Operation type: Surface
Production size: No production occurred
Development status: Prospect
ore: Powellite, Scheelite
gangue: Calcite, Chlorite, Clinozoisite, Diopside, Epidote, Grossularite, Sphene, Thulite, Zoisite
orebody_fm: LENSOID, TABULAR, POD-LIKE
model: 271: Stratabound Precambrian sulfide, Colorado and Wyoming
alteration: Bulldozer Cuts Exposed Altered Material
ore_ctrl: Wall Rock Control
Reporter: Collins, Donna B.
hrock_type: Schist,Gneiss,Calc-Silicate Schist
Structure: Front Range; Thirty One Mile And Antelope Mountain Volcanic Centers, Currant Creek Fault And Related Faults
tectonic: Central Cordillera, Southern Rocky Mtns
References:
  • Deposit:: BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT, GUNNISON, LAKE, LARIMER, PARK, AND SUMMIT COUNTIES, COLORADO: USBM INFORMATION CIRCULAR 7748, P. 7-10.
  • Deposit:: EPIS, R.C., WOBUS, R.A., SCOTT, G.R., 1979, GEOLOGIC MAP OF THE BLACK MOUNTAIN QUADRANGLE, FREMONT AND PARK COUNTIES, COLORADO: USGS MAP I-1195, 1:62,500.
  • Deposit:: HEINRICH, E.W., 1981, PRECAMBRIAN TUNGSTEN AND COPPER-ZINC SKARN DEPOSITS OF SOUTH-CENTRAL COLORADO: CGS RESOURCE SERIES 21, 115 P.
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