Mine detail: May Lundy Mine

Previously called 'Crystal Lake'

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Location

Lat / long: 38.00139, -119.25583

Resource(M)

Primary: Gold, Silver
Secondary: Lead, Copper
Tertiary: Zinc, Arsenic
Ore: Gold, Silver, Electrum
Gangue: Pyrite, Sphalerite, Magnetite, Arsenopyrite
Orebody form: Tabular
Discovery year: 1877

Production

Operation type: Underground
Deposit type: Hydrothermal vein
Development status: Past Producer

Geology

Host type:Granodiorite,Granite
Associated rock:Virginia Lakes sequence
Associated type:Hornfels,Quartzite,Chert,Conglomerate
Structure:North-northwest trending folds with steeply dipping limbs; north-northwest, steeply southwest-dipping faults/fractures.
Tectonic:Remnant of an older Jurassic-Triassic volcanoplutonic arc system overprinted by a Cretaceous volcanoplutonic arc system.
Alteration processes:Silicic; quartz Oxidation Depth of mineralization approximately 1,500 feet.

References

DEP10310710
Reference{Deposit:: Chesterman, C. W., 1975, Geology of the Matterhorn Peak 15-minute Quadrangle, Mono and Tuolomne counties, California: California Division of Mines and Geology Map Sheet MS 022, scale 1:62,500.}{Deposit:: Clark, W. B., 1998, Gold Districts of California, California Gold Discovery to Statehood: California Division of Mines and Geology Bulletin 193, Sesquicentennial Edition, p. 64-65.}{Deposit:: Eakle, A.S. and McLaughlin, R.P., 1919, Mines and Mineral Resources, Mono County: California State Mining Bureau, Report 15 of the State Mineralogist:p. 170-171.}{Deposit:: Engineering and Mining Journal (E&MJ), Oct. 1945, p. 121; Aug. 1945, p. 18; Feb. 1946, p. 18.}{Deposit:: Evernden, J. F., and Kistler, R. W., 1970, Chronology of emplacement of Mesozoic batholithic complexes in California and western Nevada: U. S. Geological Survey Professional Paper 623.}{Deposit:: Marsh, Erin, Goldfarb, Richard, Bierlein, Frank, Kunk, Mick, September 2007, New constraints on the timing of gold formation in the Sierra Nevada foothills province, central California [abstract]: Arizona Geological Society Symposium: Ores & Orogenesis, Circum-Pacific Tectonics, Geologic Evolution, and Ore Deposits; Tucson, Arizona, September 24-30, 2007, Poster Session presentation no. 33, abstract ID 168; online at agssymposium.org/media/AbsPdfs/Abstract168.pdf.}{Deposit:: May Lundy Mine, California: http://www.ghosttownexplorers.org/california/maylundy/maylundy.htm.}{Deposit:: Saleeby, Jason, 1981, Ocean floor accretion and volcanoplutonic arc evolution of the Mesozoic Sierra Nevada, in Ernst, W. G., Editor, 1981, The Geotectonic Development of California, Rubey Volume 1, Prentice-Hall, Englewood Cliffs, New Jersey 07632, p. 132-181.}{Deposit:: Sampson, R.J. and Tucker, W.B., 1940, Mineral resources of Mono County: California State Mining Bureau, Report 36 of the State Mineralogist, p. 11, 128-129.}{Deposit:: Schweickert, R. A., 1981, Tectonic evolution of the Sierra Nevada Range, Roof pendants in the eastern and southern Sierra Nevada, in Ernst, W. G., Editor, 1981, The Geotectonic Development of California, Rubey Volume 1, Prentice-Hall, Englewood Cliffs, New Jersey 07632, p. 87-131.}{Deposit:: Tucker, W. B., 1927, Mono County: California State Mining Bureau, Report 23 of the State Mineralogist, p. 376, 385-386}{Deposit:: Whiting, H.A., 1888, Homer Mining District: California State Mining Bureau, Report 8 of the State Mineralogist, p. 367-371.}
ReporterHill, Robert L., Schruben, Paul G.