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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, Inyo Co., California, USA
Scheelite
Darwin Mines, Darwin, Darwin District, Inyo Co., California, USA
Darwin Mines, Darwin, Darwin District, Inyo Co., California, USA
Latitude: 36°16'49"N
Longitude: 117°35'59"W
Longitude: 117°35'59"W
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
Mineral list contains entries from the region specified including sub-localities| Andradite Calcite Cerussite Chalcopyrite Chrysocolla | 'Clay' Fluorite Franckeite Galena Guanajuatite | Gypsum Jarosite Pyrite Quartz var: Jasper | Sphalerite Tetrahedrite |
17 entries listed. 15 valid minerals.
Localities in this Region
USA
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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.
Mineral Availability System (MAS) file #0060270687 (Darwin District Tungsten).
USBM YRBK 1972 PP 26&30 (FAIR)
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.
Mineral Availability System (MAS) file #0060270687 (Darwin District Tungsten).
USBM YRBK 1972 PP 26&30 (FAIR)
External Links
http://www.projectdarwin.net/ (Status and History of Darwin Mines)
This page is currently not sponsored. To sponsor this page click here.
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Locality Updated: Spray mine, Zeehan, Zeehan district, Tasmania, AustraliaFrom Rod Martin, 19th May 2013 09:41:10