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Darwin Mines (Darwin group; Defiance; Driver; Independence; Lane; Liberty; Lucky Jim; Southwest and Thompson; Bernon; Rip Van Winkle; Mexicanus Colorado Inc.), Darwin, Darwin District, Darwin Hills, Inyo Co., California, USA

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A group of former Pb-Zn-Ag-W-Cu-Au mines.

NOTE: This group of mines was leased by the firm Mexicanus Colorado Inc. during the early 1970's. The name is mis-spelled in the MRDS database and appears as "Mexicanus Colovgdo Inc A" under MRDS file #10188132, referencing the USGS Minerals Yearbook 1972: 26, 30.

The Company „Project Darwin LLC“ acquired the Darwin Mines and 58 patented mining claims in 1996. They have prepared a good description of these mines and their history and put it on a webpage (see under Links).

Mineralization is a polymetallic replacement deposit (Deposit Model: 72: Polymetallic replacement) hosted in rocks of the Portachuelo Formation (limestone, granodiorite).

Local structures include a thrust fault, igneous intrusions, faults, and folds.

Mineral List



17 entries listed. 15 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Butner, D.W. (1949), Investigation of tungsten occurrences in Darwin district, Inyo County, California: US Bureau Mines Report of Investigation 4475: 5.

Norman, L.A. & Richard M. Stewart (1951), Mines and mineral resources of Inyo County, California: California Journal of Mines and Geology: 47(1): 59-68.

Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines: 53(3&4): 466.

Hall, Wayne Everett & E.M. Mackevett (1958), Economic geology of the Darwin quadrangle, Inyo County, California: Calif Division of Mines Special Report 51, 77 pp.: 25-30, 37-40.

U.S. Bureau of Mines Minerals Yearbook (1972): 26, 30.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10188132.

Mineral Availability System (MAS) file #0060270687 (Darwin District Tungsten).


External Links

http://www.projectdarwin.net/ (Status and History of Darwin Mines)

Mineral and/or Locality  
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