Mine detail: West Ranch Deposit

Previously called 'West Deposit'

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Location

Lat / long:

38.73556, -105.52697

Resource(M)

Primary:	Tungsten
Ore:	Scheelite
Gangue:	Actinolite, Calcite, Chlorite, Epidote, Garnet, Grossularite, Quartz
Orebody form:	LENSOID, TABULAR, POD-LIKE

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Biotite Gneiss, Migmatitic Gneiss
Host type:	Schist,Gneiss,Skarn (Tactite)
Associated rock:	Boulder, Creek Granite Or Granodiorite
Associated type:	Pegmatite,Granite
Structure:	Thirtyone Mile Mountain Volcanic Center, Front Range, Guffey Volcanic Center, Currant Creek Fault And Related Nw-Trending Faults; Ilse Fault
Tectonic:	Central Cordillera, Southern Rocky Mtns

References

MRDS	D009192
DEP	10094545
Reference	{Deposit:: BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT, GUNNISON, LAKE, LARIMER, PARK, AND SUMMIT COUNTIES, COLORADO; USBM INFORMATION CIRCULAR 7748, P. 19-26.}{Deposit:: EPIS, R.C., WOBUS, R.A., AND 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.}
Reporter	Collins, Donna B.