Commodities
PrimaryCopper, Gold, Silver, Lead
SecondaryZinc, Iron
TertiaryAluminum, Antimony
Commodity typeM
Deposit
Deposit typeVEIN, DISSEMINATION, CHEMICAL PRECIPITATE, BOG IRON
Deposit sizeS
Ore controlFRACTURES AND ALTERED PORPHYRY IN AND ADJACENT TO CARSON INTRUSIVE CENTER
Geology
StructureSAN JUAN-UNCOMPAHGRE CALDERAS, LAKE CITY CALDERA, CARSON VOLCANO, SAN JUAN VOLCANIC FIELD, SAN JUAN DEPRESSION
AlterationLARSEN (1911) RECOGNIZED THREE TYPES OF ALTERATION: (1) SERICITIZATION OF FELDSPARS, LEACHING OF DARK MINERALS, DISSEMINATED PYRITE; (2) SILICIFICATION, ALUNITIZATION AND KAOLINITIZATION OF FELDSPAR NEARER VEIN FILLING; (3) COMPLETE REPLACEMENT OF GROUNDMASSBY QUARTZ, COMPLETE LEACHING OF FELDSPARS.
Economic & production
Development statusPast Producer
First production1880
Last production1940
Discovery year1881
Identification
Deposit ID60000388
MRDS IDD011580
RegionNA
Data scoreD
Coordinates37.86891, -107.36173
References
LARSEN, E.S., 1911, THE ECONOMIC GEOLOGY OF CARSON CAMP, HINSDALE COUNTY, COLORADO: USGS BULL. 470, P. 30-38.LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.LARSEN, E.S., JR., AND CROSS, WHITMAN, 1956, GEOLOGY AND PETROLOGY OF THE SAN JUAN REGION, SOUTHWEST COLORADO: USGS PROF. PAPER 258.HON, KEN, AND MEHNERT, H.H., 1983, COMPILATION OF REVISED AGES OF VPLCANIC UNITS IN THE SAN JUAN MOUNTAINS, COLORADO--RECALCULATED K-AR AGE DETERMINATIONS USING IUGS CONSTANTS: USGS OPEN-FILE REPT. OFR-83-668.STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHWESTERN COLORADO: USGS PROF. PAPER 958, P. 10-16.LIPMAN, P.W., AND OTHERS, 1973, REVISED VOLCANIC HISTORY OF THE SAN JUAN, UNCOMPAHGRE, SILVERTON, AND LAKE CITY CALDERAS IN THE WESTERN SAN JUAN MOUNTAINS: USGS JOUR. RESEARCH, V. 1, NO. 6, P. 627-642.LIPMAN, P.W., AND OTHERS, 1976, MULTIPLE AGES OF MID-TERTIARY MINERALIZATION AND ALTERATION IN THE WESTERN SAN JUAN MOUNTAINS COLORADO: ECON. GEOLOGY, V. 71, NO. 3, P. 571-588.HARRER, C.M. AND TESCH, W.J., JR., 1959, RECONNAISSANCE OF IRON OCCURRENCES IN COLORADO: USBM IC-7918, P. 44.COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.BLM MINERAL SURVEYS