California · Los Angeles County
Past Producer

Governor Mine

Los Angeles County, California, United States
SilverGoldCopper
⌖ Show on mapUSGS source ↗
Commodities
PrimarySilver, Gold
SecondaryCopper
Commodity typeM
Deposit
Deposit typeHydrothermal vein
Model273: Low-sulfide Au-quartz vein
Orebody formTabular
Ore controlMineralization (native gold) is largely controlled by, and confined to, a master shear zone in the plutonic host rock.
Materials
Ore mineralsGold
GangueQuartz, Pyrite
Geology
Host rockDiorite,Granodiorite · Lowe Granodiorite
Associated rockSyenite,Granite
StructureThe shear zone mentioned above trends N20W and dips 75NE. It averages about 4 feet wide, but reaches thicknesses of 18-25 feet. The zone is known to extend for at least 500 feet along strike and to at least 1,000 feet in depth., Vincent Thrust
Tectonic settingMagmatic arc
AlterationSilicic; quartz\n\nOxidation; along main shear zone
Economic & production
Development statusPast Producer
Discovery year1880
Identification
Deposit ID10310624
Alternate namesNew York
RegionNA
Data scoreA
Coordinates34.50653, -118.20573
References
Albers, J.P., 1981, A lithologic-tectonic framework for the metallogenic provinces of California: Economic Geology, v. 76, no. 4, p. 765-790.Albers, J.P. and Fraticelli, L.A., 1984, Preliminary mineral resource assessment map of California: U.S. Geological Survey Map MR-88, scale 1:1,000,000.Barth, A.P. and others, 1991, Mesozoic evolution of basement terranes of the San Gabriel Mountains, southern California: Summary and field guide, in Walawender, M.J. and Hanan, B.B., editors, Geological excursions in southern California and Mexico: Geological Society of America Guidebook, 1991 Annual Meeting, San Diego, California, p. 186-198.Barth, A.P. and others, 1997, Triassic plutonism in southern California: Southward younging of arc initiation along a truncated continental margin: Tectonics, v. 16, no. 2, p. 290-304.Clark, W.B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 169.Dibblee, T.W., Jr., 1982a, Geology of the San Gabriel Mountains, southern California, in Fife, D.L. and Minch, J.A., editors, Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society, Annual Symposium and Guidebook, no. 10, p.131-147.Dibblee, T.W., Jr., 1982b, Regional geology of the Transverse Ranges Province of southern California, in Fife, D.L. and Minch, J.A., editors, Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society, Annual Symposium and Guidebook, no. 10, p. 7-26.Dibblee, T.W., Jr., 1997, Geologic map of the Sleepy Valley and Ritter Ridge quadrangles, Los Angeles County, California: Dibblee Geological Foundation Map Number DF-66, scale 1:24,000.Ehlig, P.L., 1981, Origin and tectonic history of the basement terrane of the San Gabriel Mountains, central Transverse Ranges, in Ernst, W.G., editor, The geotectonic development of California (Rubey volume 1): Prentice-Hall, Englewood Cliffs, New Jersey, p. 253-283.Fife, D.L. and Minch, J.A., 1982, Geology and mineral wealth of the California Transverse Ranges: South Coast Geological Society, Annual Symposium and Guidebook, no. 10, 699 p.Gay, T.E., Jr. and Hoffman, S.R., 1954, Mines and mineral deposits of Los Angeles County, California: California Journal of Mines and Geology, v. 50, nos. 3-4, p. 467-709.Irelan, W., Jr., 1888, Los Angeles County: California State Mining Bureau 8th Report of the State Mineralogist, p. 332.Jacobson, C.E. and others, 2000, Late Cretaceous protolith age and provenance of the Pelona and Orocopia schists, southern California: Implications for evolution of the Cordilleran margin: Geology, v. 28, no. 3, p. 219-222.Merrill, F.J.H., 1916, Los Angeles County: California State Mining Bureau 15th Report of the State Mineralogist, p. 465-514.Miller, F.K. and Morton, D.M., 1977, Comparison of granitic intrusions in the Pelona and Orocopia schists, southern California: U.S. Geological Survey Journal of Research, v. 5, no. 5, p. 643-649.Preston, E.B., 1889, Los Angeles County: California State Mining Bureau 9th Report of the State Mineralogist, p. 189-210.Sampson, R.J., 1937, Mineral resources of Los Angeles County: California Journal of Mines and Geology, v. 33, no. 3, p. 173-213.Silver, L.T., 1966, Preliminary history of the crystalline complex of the Transverse Ranges, Los Angeles County, California: Geological Society of America, Abstracts with Programs, v. 8, p. 201.Terres, R.R. and Luyendyk, B.P., 1985, Neogene tectonic rotation of the San Gabriel region, California, suggested by paleomagnetic vectors: Journal of Geophysical Research, v. 90, no. B14, p. 12,467-12,484.Tucker, W.B., 1927, Los Angeles County: California State Mining Bureau 23rd Report of the State Mineralogist, p. 287-345.Tucker, W.B., 1934, Current mining activity in southern California - Los Angeles County: California Journal of Mines and Geology, v. 30, no. 4, p. 318.Tucker, W.B. and Sampson, R.J., 1940, Current mining activity in southern California - Los Angeles County: California Journal of Mines and Geology, v. 36, no. 1, p. 43-44.Jones, C.C., 1937, Report on the Governor Mine: 15 p. (CDMG Mineral Resources Files, Sacramento)