Commodities
PrimaryGold, Silver
SecondaryLead
TertiaryCopper, Zinc
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeS
Ore controlNe-Trending Fault Within Graben
Materials
Ore mineralsChalcopyrite, Galena, Pyrite, Sphalerite
GangueQuartz
Geology
Host rockRhyolite
Associated rockRhyolite,Quartz Latite,Andesite · Eureka Member Of Sapinero Mesa Tuff;Biotite-Quartz Latite Of Burns Member Of Silverton Volcanics;Porphyritic Andesite Of Pyroxene Andesite Member Of Silverton Volcanics
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
Last production1930
Identification
Deposit ID10101906
MRDS IDD011613
Alternate namesEmpire Chief Mine, Patented Claims: U.S., MS 1207, Empire, MS 1208, Highland Chief, MS 1209a, Highland Chief Mill Site, MS 1209b, Brick Pomeroy, MS 16478a, Wall Street, MS 16478a, Amazon, MS 16478a, Brick Pomeroy Mill Site, MS 16478b, Bonanza, MS 16479a, Magnolia, MS 16479a, Hondee, MS 16479a, Mathison, MS 16479a, Bonanza Mill Site, MS 16479b
RegionNA
Data scoreB
Coordinates37.97528, -107.52147
References
LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.BROWN, W.H., 1926, THE MINERAL ZONES OF THE WHITE CROSS DISTRICT AND NEIGHBORING DEPOSITS IN HINSDALE COUNTY, COLORADO: MINES MAG., V. 15, NO. 11, P. 5-15.CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE SILVERTON QUADRANGLE: USGS FOLIO 120, 34 P.COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.BLM MINERAL SURVEYS MS 1207, 1208, 1209A&B, 16478A&B, 16479A&B, 20166LUEDKE, R.G., AND BURBANK, W.S., 1975, PRELIMINARY GEOLOGIC MAP OF THE HANDIES PEAK QUADRANGLE, COLORADO: USGS OPEN-FILE REPT. 75-432.MARKS, J.H., 1925, REPORT ON THE EMPIRE CHIEF MINING COMPANY PROPERTY: UNPUB. REPT., 15 P.MARKS, 1925; COLORADO DIV. MINES ANNUAL OPERATOR REPTS.