Lincoln Consolidated Mines

Amador County, California, United States

GoldSilver

⌖ Show on map USGS source ↗

Commodities

PrimaryGold

SecondarySilver

Commodity typeM

Deposit

Deposit typeHydrothermal vein

Model273: Low-sulfide Au-quartz vein

Orebody formTabular, pinch and swell

Ore controlOre shoots within mesothermal gold bearing quartz veins, and as disseminated auriferous sulfides in greenstone\n

Materials

Ore mineralsGold, Arsenopyrite, Pyrite

GangueQuartz, Calcite, Ankerite, Sphalerite, Chlorite, Sericite

Geology

Host rockSlate,Greenstone · Mariposa Formation

StructureMelones Fault zone, Bear Mountains Fault zone, Melones Fault Zone

Tectonic settingMagmatic arc

AlterationHWall rocks hydrothermally altered, having been partially to completely converted to ankerite, sericite, quartz, pyrite, arsenopyrite, chlorite, and albite. Locally, greenstone bodies adjacent to the quartz veins contain enough disseminated auriferous pyrite in large enough bodies to constitute low-grade ore.

Economic & production

Development statusPast Producer

Discovery year1851

Identification

Deposit ID10310639

Alternate namesUnion Mine, Wildman Mine, Mahoney Mine

RegionNA

Data scoreA

Coordinates38.40027, -120.80618

References

Carlson, D.W., and Clark, W.H., 1954, Mines and mineral resources of Amador County, California: California Division of Mines and Geology, 50th Report of the State Mineralogist, p. 185-196.Clark, W. B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 69-76.Duffield, W.A. and Sharp, R.V., 1975, Geology of the Sierra foothills melange and adjacent areas, Amador County, California: U.S. Geological Survey Professional Paper 827, 30 p.Hazlitt, S., and Russell, D. 1990, The Lincoln Mine exploration project, Amador County, California: in, Seedorff, E., ed., Geology and ore deposits of the Sierra Nevada and foothills; Mary Harrison prospect, Royal Mountain King Mine, Lincoln Mine, Spanish Mine: Geological Society of Nevada, 1990 fall field trip guidebook, p. 101-117.Irelan, W., Jr., 1888, Amador County, Lincoln Mine: California State Mining Bureau, 8th Annual Report of the State Mineralogist, p. 73.Knopf, A., 1929, The Mother Lode system of California: U. S. Geological Survey Professional Paper 157, 88 p.Koschman, A.H., and Bergendahl, M.H., 1968, Principal Gold-Producing districts of the United States: U. S. Geological Survey Professional Paper 610, 283 p..Logan, C.A., 1927, Amador County, Lincoln Consolidated Mines: California State Mining Bureau, 23nd Report of the State Mineralogist, p. 170-172.Moore, L., 1968, Gold resources of the Mother Lode Belt, El Dorado, Amador, Calaveras, Tuolumne, and Mariposa counties, California: U.S. Bureau of Mines Technical Progress Report 5, p. 1-22.Seedorf, E., 1990, Geology and ore deposits of the Sierra Nevada and foothills; Mary Harrison prospect, Royal Mountain King Mine, Lincoln Mine, Spanish Mine: Geological Society of Nevada, 1990 fall field trip guidebook, p. 101-117.Schweickert, R.A., Hanson, R.E., and Girty, G.H., 1999, Accretionary tectonics of the Western Sierra Nevada Metamorphic Belt in Wagner, D.L. and Graham, S.A., editors, Geologic field trips in northern California: California Division of Mines and Geology Special Publication 119, p. 33-79.Sibson, R.H., and Poulsen, K.H., 1988, High-angle reverse faults, fluid-pressure cycling and mesothermal gold quartz deposits: Geology, v. 16, p. 551-555.Storms, W.H., 1900, The Mother Lode region of California: California Mining Bureau Bulletin 18, p. 72-74.Tucker, W.B., 1914, Amador County, Lincoln Consolidated Mines: California State Mining Bureau, 14th Annual Report of the State Mineralogist, p. 36.Zimmerman, J.E., 1983, The Geology and structural evolution of a portion of the Mother Lode Belt, Amador County, California: unpublished M.S. thesis, University of Arizona, 138 p.Additional information on the Lincoln Mine is available in file nos. 329-8357 and 339-1464 (CGS Mineral Reources Files, Sacrament)o.