Mine detail: Larson Volcano

Previously called 'Larson Center'

Location:	Hinsdale County, Colorado, United States, North America
Lat / long:	38.07861, -107.31035
dep_id:	10094702
mrds_id:	D011578
Commodity type:	metallic
Major mineral:	Silver, Gold, Copper, Lead
Minor mineral:	Zinc
Trace mineral:	Molybdenum
Operation type:	Unknown
Production size:	No production occurred
Development status:	Occurrence
ore:	Chalcopyrite, Molybdenite, Pyrite, Sphalerite
ore_ctrl:	Plugs And Radiating Dikes From Precaldera Volcano
Reporter:	Schwochow, Stephen D.
hrock_type:	Monzonite,Rhyolite,Rhyodacite,Andesite
arock_unit:	Early Intermediate-Composition Lavas And Related Rocks--Intrusive Rocks (Monzonite And Monzonite Porphyry);Early Intermediate-Composition Lavas And Related Rocks--Intrusive Rocks (Rhyolite Porphyry);Early Intermediate-Composition Lavas And Related Rocks--Intrusive Rocks (Andesite And Rhyodacite Porphyries);Early Intermediate-Composition Lavas And Related Rocks--Cone Breccias And Lava Flows
arock_type:	Monzonite,Rhyolite,Rhyodacite,Quartz Latite,Andesite
Structure:	San Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera, Larson Volcano
tectonic:	Central Cordillera (Southern Rocky Mtns)
References:	Deposit:: LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962. Deposit:: HON, KEN, AND MEHNERT, H.H., 1983, COMPILATION OF REVISED AGES OF VOLCANIC UNITS IN THE SAN JUAN MOUNTAINS, COLORADO--RECALCULATED K-AR AGE DETERMINATIONS USING IUGS CONSTANTS: USGS OPEN-FILE REPT. OFR-83-668. Deposit:: 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. Deposit:: 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. Deposit:: STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHWESTERN COLORADO: USGS PROF. PAPER 958, P. 10-16. Deposit:: STEVEN, T.A., AND OTHERS, 1977, MINERAL RESOURCES OF STUDY AREAS CONTIGUOUS TO THE UNCOMPAHGRE PRIMITIVE AREA, SAN JUAN MOUNTAINS, SOUTHWESTERN COLO RADO: USGS BULL. 1391-E, P. 36, 83-85, PLS. 1, 3. Deposit:: WORCESTER, P.G., 1919, MOLYBDENUM INDUSTRY: CGS BULL. 14, P. 67.