Mine detail: Democrat Hill deposit

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Location:	Custer County, Colorado, United States, North America
Lat / long:	38.10473, -105.36196
dep_id:	10009280
mrds_id:	D002159
Commodity type:	metallic and nonmetallic
Major mineral:	Gold, Aluminum, Potassium, Silver
Minor mineral:	Lead, Zinc
Operation type:	Underground
Production size:	No production occurred
Development status:	Past Producer
ore:	Alunite, Diaspore, Kaolinite, Pyrite, Galena, Sphalerite
gangue:	Quartz
orebody_fm:	LARGE CHIMNEY (VOLCANIC CONDUIT)
work_type:	Surface/Underground
model:	154: Epithermal quartz-alunite Au
alteration:	Alunitization, Silicification, Kaolinization. Alteration Of Rhyolite To Alunite By Solfataric Action
Reporter:	Hall, Robert B., Starritt, Bruce C., Intermountain Field Operations Center (IFOC), Beach, Richard A.
hrock_unit:	Rosita Hills Rhyolite
hrock_type:	Rhyolite
arock_type:	Rhyolite
disc_yr:	1890
discr:	W. Cross Usgs
References:	Analytical Data:: SRC.REF: THOENEN, J. R., 1941 , USBM R. I. 3561 , P. 13 Deposit:: CROSS, C. W., 1891 , ON ALUNITE AND DIASPORE FROM THE ROSITA HILLS, COLORADO: AM. JOUR. SCI., 3RD SER., V. 41 , NO. 246 , P. 466 - 475 . Deposit:: CROSS, C. W., 1896 , GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPT., PT. 2 , P. 314 - 315 , 377 - 378 . Deposit:: CROSS, C. W., 1912 , ALUNITE DEPOSITS OF ROSITA HILLS, COLORADO, USGS BULL. 511 , P. 38 - 41 . Deposit:: GARDNER, L. S., 1943 , UNPUB. REPT. IN USGS FILE Deposit:: 1878 DIREXPL UNKNOWN: PROSPECTING WORKS Deposit:: 1883 GEOLMAP W. CROSS: PUB. REPTS. Deposit:: 1940 RECON USBM: R. I. 3561 Deposit:: 1942 RECON L. S. GARDNER: UNPUB. REPT. Geology:: SHARP, W.N., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081, 1:24,000. Reserve-Resource:: THOENEN, J. R., 1941 , ALUNITE RESOURCES OF THE UNITED STATES: USBM REPT. INV. 3561 , P. 13 - 14. Reserve-Resource:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.