Mine detail: Crescent Mine

Previously called ''

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Location

Lat / long:

38.71944, -105.5478

Resource(M)

Primary:	Tungsten, Copper, Zinc
Secondary:	Silver, Lead, Gold, Molybdenum
Ore:	Chalcopyrite, Galena, Molybdenite, Scheelite, Sphalerite
Gangue:	Quartz
Discovery year:	1919

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1919

Geology

Host rock:	Idaho Springs Formation, Biotite Gneiss
Host type:	Gneiss
Associated type:	Tonalite
Structure:	Southern Front Range, Northern Wet Mountains, Thirtynine Mile Volca Nic Field, Guffey Volcanic Center, Currant Creek Fault
Tectonic:	Central Cordillera, (Southern Rocky Mountains)
Alteration processes:	Migmatitization

References

MRDS	D010529
DEP	10013955
Reference	{Deposit:: HEINRICH, E.W., 1981, PRECAMBRIAN TUNGSTEN AND COPPER-ZINC SKARN DE POSITS OF SOUTH-CENTRAL COLORADO: CGS RESOURCE SERIES 21, 115 P.}{Deposit:: BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT, GUNNISO N, 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:: WORCESTER, P.G., 1919, MOLYBDENUM DEPOSITS OF COLORADO, WITH GENERA L NOTES ON THE MOLYBDENUM INDUSTRY: CGS BULLETIN 14, P. 76-77 5)}{Deposit:: LEMMON, D.M. AND TWETO, O.L., 1962, TUNGSTEN IN THE UNITED STATES: USGS MAP MR-25.}
Reporter	Collins, Donna B.