Commodities
PrimarySilver, Gold
SecondaryCopper
TertiaryLead, Zinc, Manganese, Antimony
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeS
Ore controlNe-Trending Radial Fault/Fracture Related To Lake City Caldera Formation
Materials
Ore mineralsChalcopyrite, Galena, Silver, Sphalerite
GangueBarite, Quartz, Rhodochrosite
Geology
Host rockQuartz Latite
Associated rockQuartz Latite · Biotite-Quartz Latite Of Burns Member Of Silverton Volcanics
StructureSan Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationSilicification; Supergene Oxidation Of Argentiferous Cu Sulfide To Chalcocite And Native Ag; Sericitization
Economic & production
Development statusPast Producer
Identification
Deposit ID10014676
MRDS IDD011555
Alternate namesPatented Claims: Contention, MS 4694, Mayflower, MS 9792
RegionNA
Data scoreB
Coordinates37.98612, -107.29369
References
IRVING, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL. 478, P. 102-104.LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.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.SLACK, J.F., 1980, MULTISTAGE VEIN ORES OF THE LAKE CITY DISTRICT, WESTERN SAN JUAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 75, NO. 7, P. 963-991.COLORADO DIV. MINES INF. REPT.BLM MINERAL SURVEYS MS 4694, 9792BOEHMER, MAX, 1890, REPORT ON THE ADJOINING EMERALD ISLE AND CONTENTION CLAIMS: COLORADO STATE PLANNING COMM. UNPUB. REPT., 3 P.IRVING AND BANCROFT, 1911, P. 102.