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Keogh Mine, Coso [historical], Coso District (New Coso District), Coso Mts (Coso Range), Inyo Co., California, USA

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A former W mine located in sec. 23, T20S, R40E, MDM, 6.1 km (3.8 miles) NE of Coso (historical)(7 miles a little W of S from Darwin), on military reservation land (China Lake Naval Ordnance Test Station). Operated in 1942. MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is hosted in limestone and granodiorite. The ore body is podiform at a width of 3.05 meters and a length of 12.19 meters. Ore emplacement controls included cross-fractures. Local rocks include pre-Cenozoic metasedimentary and metavolcanic rocks undivided and/or Quaternary alluvium and marine deposits.

Workings include surface and underground openings comprised of open cuts and a 12 foot deep shaft.

A few tons of ore estimated to contain 1% WO3 was mined.

Analytical data results: 5.0 to 6.18% WO3.

Mineral List



3 entries listed. 2 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

Tucker, W. Burling & Reid J. Sampson (1938), Mineral resources of Inyo County, California: California Journal of Mines and Geology; California Division of Mines (Report 34): 34(4): 569.

Norman, L.A. & Richard M. Stewart (1951), Mines and mineral resources of Inyo County, California: California Journal of Mines and Geology (Report 47): 47(1): 197.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10008709 & 10284969.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060270035.

Lemmon, D.M., Tungsten deposits in the US; Vol. I, unpublished data: 182.

 
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