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Four Point claim, Copper Hill, South Fork District, Klamath Mts, Trinity Co., California, USA

Latitude: 40°26'34"N
Longitude: 123°18'18"W
A Mn occurrence/claim located in the NW¼ sec. 29, T1N, R8E, HM, 3.9 km (2.4 miles) NE of Copper Hill, in the headwaters area of North Rattlesnake Creek and North Post Creek (on the E side of a road leading S from the forest road to Limedyke), on National Forest land (located claim). Owned by R Sihlis, California (1974). MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is hosted in chert. A mass of low grade manganiferous chert not over 4 feet in diameter, in chert associated with greenstone. Local rocks include Paleozoic marine rocks, undivided, unit 9 (Western Klamath Mountains).

Analytical data results: Estimated less than 10% Mn.

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Trask, Parker Davies, Ivan F. Wilson & F.S. Simons (1943), Manganese deposits of California – a summary report: California Division Mines Bulletin 125: 198.

Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 317.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10033689 & 10190584.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0061050034.

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