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Pacific Tungsten Co. Mine 2, Darwin, Darwin District, Inyo Co., California, USA
Latitude: 36°16'12"N
Longitude: 117°34'40"W
Longitude: 117°34'40"W
Tungsten ore has been reported in the area since 1915, but there was no
mining for Tungsten until the early 1940’s, when Tungsten was needed because of WW II.
In 1940 Frank Watkins, C.W. Fletcher and others organized the Darwin Consolidated Tungsten Company.
In 1941 E.L. Cord and others formed the Pacific Tungsten Company which leased 23 mining claims from the Darwin Consolidated Tungsten Company.
The Pacific Tungsten Company operated in the 1940’s (WW II) and 1950’s (Korean war) a number of mines in this area, like the St Charles, Hayward, Durham and Fernando mines and others. Some were just named after the operator. Therefore there are several mines with the name of “Pacific Tungsten Co.”
The ore was treated in a gravity-concentrating plant near Keeler.
Corrected description and position N36.26986 W117.57787 by Richard Muster, taken at remains of mining activities in the year 2009 using an Ashtech MM6 device.
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References
Knopf, Adolph (1914) The Darwin Lead-Silver Mining District California, USGS Bulletin 580-A, 19 p.
Wilson L. Kenneth (1943), Tungsten deposits of the Darwin Hills Inyo County, California Economic Geology: 38: 543-560.
Butner, D.W. (1949), Investigation of tungsten occurrences in Darwin district, Inyo County, California: US Bureau Mines Report of Investigation 4475.
Norman, L.A., and Stewart, R.A.(1951), Mines and Mineral Resources of Inyo County, California, California Division of Mines and Geology Report 47): 47(1) (January 1951).
Hall, Wayne Everett & E.M. Mackevett (1958), Economic geology of the Darwin quadrangle, Inyo County, California: Calif Division of Mines Special Report 51, p: 65.
Hall, Wayne Everett & Edward M. Mackevett (1963), Geology and ore deposits of the Darwin quadrangle, Inyo County, California: USGS Professional Paper 368: 59, 76, 77.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 106, 107.
Morrison, Greg (1980) Tungsten Occurrences and Potential in the Darwin Hill, Inyo County, California, University of Western Ontario, February, 1980.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 102 (map 3-6), 125-126, 234, 333.
Stolburg, C. S. (1984) The Mines and Minerals of Darwin, California, The Mineralogical Record: 15(1): 5-18.
Randol Mining Directory (1990).
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID # 10110681.
Wilson L. Kenneth (1943), Tungsten deposits of the Darwin Hills Inyo County, California Economic Geology: 38: 543-560.
Butner, D.W. (1949), Investigation of tungsten occurrences in Darwin district, Inyo County, California: US Bureau Mines Report of Investigation 4475.
Norman, L.A., and Stewart, R.A.(1951), Mines and Mineral Resources of Inyo County, California, California Division of Mines and Geology Report 47): 47(1) (January 1951).
Hall, Wayne Everett & E.M. Mackevett (1958), Economic geology of the Darwin quadrangle, Inyo County, California: Calif Division of Mines Special Report 51, p: 65.
Hall, Wayne Everett & Edward M. Mackevett (1963), Geology and ore deposits of the Darwin quadrangle, Inyo County, California: USGS Professional Paper 368: 59, 76, 77.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 106, 107.
Morrison, Greg (1980) Tungsten Occurrences and Potential in the Darwin Hill, Inyo County, California, University of Western Ontario, February, 1980.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 102 (map 3-6), 125-126, 234, 333.
Stolburg, C. S. (1984) The Mines and Minerals of Darwin, California, The Mineralogical Record: 15(1): 5-18.
Randol Mining Directory (1990).
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID # 10110681.
External Links
http://pubs.usgs.gov/bul/0580a/report.pdf (Adolph Knopf 1913)
http://pubs.usgs.gov/pp/0368/report.pdf (Hall, Wayne Everett & Edward M. Mackevett (1963),)
http://mccd.edu/faculty/daviesr/Geology/Geology%20References/Minerals%20of%20California.pdf (Minerals of California 1952 )
http://www.projectdarwin.net/files/project_darwin_70_tungsten_occurrences-_gregg_morr.pdf (Tungsten occurrences)
http://pubs.usgs.gov/pp/0368/report.pdf (Hall, Wayne Everett & Edward M. Mackevett (1963),)
http://mccd.edu/faculty/daviesr/Geology/Geology%20References/Minerals%20of%20California.pdf (Minerals of California 1952 )
http://www.projectdarwin.net/files/project_darwin_70_tungsten_occurrences-_gregg_morr.pdf (Tungsten occurrences)
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Locality Updated: Klotzberg south slope, Idar-Oberstein, Hunsrück, Rhineland-Palatinate, GermanyFrom Richard Muster, 22nd May 2013 13:38:06