Commodities
TertiaryGold, Copper
Commodity typeM
Deposit
Model154: Epithermal quartz-alunite Au
Deposit sizeN
Ore controlCaldera Rim Fault And Fractures Cutting Precaldera Porous Volcanic Breccias
Materials
Ore mineralsChalcopyrite, Gold, Pyrite
GangueCalcite, Goethite
Geology
Host rockRhyodacite,Andesite · Conejos Formation--Cone Breccias;Conejos Formation--Vent Facies
Associated rockRhyodacite,Andesite · Intrusive Rocks--Andesite Porphyry
StructureSan Juan Volcanic Field, Platoro Caldera (Rim)
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationAlteration Generally Argillic But Local Silicic And Propylitic Occur; Fe Oxidation (Hematite Staining)
Economic & production
Development statusOccurrence
Discovery year1971
Identification
Deposit ID10087905
MRDS IDD010734
RegionNA
Data scoreB
Coordinates37.34446, -106.60477
References
BIRD, W.H., 1973, THE DEVELOPMENT OF THE SOUTHERN PORTION OF THE PLATORO CALDERA COMPLEX AND ITS RELATED MINERAL DEPOSITS, SOUTHEAST SAN JUAN MOUNTAINS, COLORADO: COLORADO SCHOOL OF MINTE THESIS T-1440.LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MPA I-828.