Description
B. F. H. Adams And W. B. Owen (Claimants)
Commodities
PrimarySilver, Copper, Lead
SecondaryZinc
TertiaryAntimony
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeS
Ore controlNw-Trending Fault/Fracture Transverse To Trend Of Pre-Lake City Caldera Eureka Graben And Possibly In Radial Or Subradial Orientation To Nw Ring Fault Of Lake City Caldera
Materials
Ore mineralsChalcopyrite, Copper, Galena, Pyrite, Silver, Sphalerite, Tetrahedrite
GangueLimonite, Quartz
Geology
Host rockRhyolite
Associated rockMonzonite,Rhyolite · Eureka Member Of Sapinero Mesa Tuff;Intrusive Rocks--Monzonite Porphyry;Intrusive Rocks--Rhyolite
StructureSan Juan Volcanic Field, San Juan Depression, San Juan-Uncompahgre Calderas, Lake City Caldera, Eureka Graben
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1893
Last production1920
Discovery year1878
Identification
Deposit ID10014716
MRDS IDD011607
Alternate namesPatented Claim: Excelsior, Ms 5184
RegionNA
Data scoreB
Coordinates38.01222, -107.46674
References
IRVING, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL. 478, P. 74-76.SLACK, J.F., 1980, MULTISTAGE VEIN ORES OF THE LAKE CITY DISTRICT, WESTERN SAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 75, NO. 7, P. 963-991.LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.BLM MINERAL SURVEY MS 5184IRVING AND BANCROFT, 1911, P. 74-75; MINERAL RESOURCES OF U.S.