Mine detail: Crescent Mine

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Location:	Park County, Colorado, United States, North America
Lat / long:	38.71944, -105.5478
dep_id:	10013955
mrds_id:	D010529
Commodity type:	metallic
Major mineral:	Tungsten, Copper, Zinc
Minor mineral:	Silver, Lead, Gold, Molybdenum
Operation type:	Unknown
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Chalcopyrite, Galena, Molybdenite, Scheelite, Sphalerite
gangue:	Quartz
work_type:	Underground
alteration:	Migmatitization
ore_ctrl:	Wall Rock Control For Tungsten Skarns; Fracture/Fault Control On Cu -Zn Skarns
Reporter:	Collins, Donna B.
hrock_unit:	Idaho Springs Formation, Biotite Gneiss
hrock_type:	Gneiss
arock_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)
yfp_ba:	<
Year first produced:	1919
dy_ba:	<
disc_yr:	1919
References:	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.