Boles placer, Pilot Hill, Pilot Hill District, El Dorado Co., California, USA
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Latitude & Longitude (WGS84): | 38° 50' 42'' North , 121° 3' 35'' West |
Latitude & Longitude (decimal): | 38.845, -121.059722222 |
Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Excavated by barge-mounted suction pump which discharged to sluice boxes with the nozzle guided by a diver.
Mineral List
1 entry listed. 1 valid mineral.
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
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References
Logan, Clarence August (1926), El Dorado County: California Mining Bureau. (Report 22): 22: 438.
Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology (Report 52): 52(4): 543.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10029656 & 10159345.
U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060170041.
Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology (Report 52): 52(4): 543.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10029656 & 10159345.
U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060170041.