Mine detail: Leadville District

Previously called 'Black CloudYak TunnelDowntownCarbonate HillGreenbackSacramentCalifornia (California Gulch)Rock HillIron HillFryer HillEvansIowaEmpireBreece Hill'

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Location

Lat / long: 39.24, -106.26

Resource(B)

Primary: Silver, Zinc, Lead, Gold
Secondary: Iron, Sulfur, Sulfuric Acid, Bismuth, Manganese, Copper
Tertiary: Tungsten, Vanadium, Cadmium
Ore: Hematite, Chalcopyrite, Argentite, Magnetite, Galena, Cerargyrite, Gold, Cerussite, Pyrite, Chalcocite, Sphalerite, Hemimorphite, Limonite, Manganese Ox-Hydrous, Silver, Smithsonite, Wad
Gangue: Siderite, Serpentine, Quartz

Production

Operation type: Surface-Underground
Deposit type: polymetallic vein, massive sulfide manto
Development status: Past Producer
First production started: 1860
Last production ended: 1999

Geology

Host rock:Sawatch Quartzite, Peerless Shale, Manitou Dolomite, Parting Sandstone, Dyer Dolomite, Gilman Sandstone, Leadville Dolomite, Belden Formation, Minturn Formation, Pando, Lincoln, Evans Gulch, Sacramento, Johnson Gulch, rhyolite, and fragmental porphyries
Host type:Orthoquartzite,Shale,Dolomite,Sandstone,Black Shale,Arkose,Porphyry
Associated rock:St. Kevin Granite
Associated type:Granite
Structure:numerous faults of several periods
Alteration processes:silicification, sericitization

References

MRDSD000017
MAS80650007
DEP10008106
Reference{Deposit:: Emmons, S.F., Irving, J.D., and Loughlin, G.F., 1927, Geology and ore deposits of the Leadville mining district, Colorado: U.S. Geological Survey Professional Paper 148, 368 p.}{Deposit:: Behre, C. H., Jr., 1953, Geology and ore deposits of the west slopeof the Mosquito Range (Colorado): U.S. Geological Survey Professional Paper 235, 176 p.}{Deposit:: Tweto, O., 1968, Leadville district, Colorado, in Ridge, J. D., editor, Ore deposits of the United States, 1933-1967 (Graton-Sales volume): New York, American Institute of Mining Engineers, p. 681-705.}{Deposit:: Thompson, T. B., and Arehart, G. B., 1990, Geology and the origin of ore deposits in the Leadville district, Colorado: Part I. Geologic studies of orebodies and wall rocks: Economic Geology Monograph 7, p. 130-155.}{Deposit:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.}{Deposit:: Harrer, C.M., and Tesch, W.J., Jr., 1959, Reconnaissance of iron occurrences in Colorado, U.S. Bureau of Mines Information circular 7918, 82 p.}{Names:: Dunn, L.G, 2003, Colorado mining districts: A reference: Golden, Colo., Colorado School of Mines Library, 364 p.}{Reserve-Resource:: Hedges, J. H., 1940, Mineral industries survey of the United States, Colorado, Lake County, Possibilities of manganese production at Leadville, Colo.: U.S. Bureau of Mines Information Circular 7125, 23 p.}
ReporterSchruben, Paul, Melton, Greg, Intermountain Field Operations Center (IFOC), Beach, Richard A., FISCHER, RICHARD P.