Commodities
PrimaryAluminum
SecondaryCopper, Lead
TertiarySilver, Zinc, Gold
Commodity typeM
Deposit
Deposit typeReplacement
Model154: Epithermal quartz-alunite Au
Deposit sizeN
Orebody formPOD
Ore controlSmall Intrusive Centers
Materials
Ore mineralsAlunite
GangueChlorite, Kaolinite, Pyrite, Quartz, Sericite
Geology
Host rockQuartz Latite · Fisher Quartz Latite;Volcanic Of Table Mountain
Associated rockQuartz Latite · Fisher Quartz Latite;Volcanics Of Table Mountain
StructureSan Juan Volcanic Field, La Garita Caldera, Creede Caldera, Mount Hope Caldera, Small Unnamed Intrusive Centers
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationSilicification Argillization, Propylitization, Alunitization
Economic & production
Development statusOccurrence
Identification
Deposit ID10014054
MRDS IDD010670
Alternate namesColorado Tunnel
RegionNA
Data scoreB
Coordinates37.57973, -106.99173
References
STEVEN, T.A., AND LIPMAN, P.W., 1973, GEOLOGIC MAP OF THE SPAR CITY QUADRANGLE, MINERAL COUNTY, COLORADO: USGS MAP GQ-1052.STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F, P. 80-81, 174-177.HALL, R.B., 1980, ALUNITE--A POTENTIALLY ECONOMIC SOURCE OF ALUMINUM AND POTASH?, IN SCHWOCHOW, S.D., ED., PROCEEDINGS OF THE FIFTEENTH FORUM ON GEOLOGY OF INDUSTRIAL MINERALS: CGS RESOURCE SERies 8, P. 77-88.