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Hill Brothers claim (Marks; Hill Brothers prospects; Kaweah River; Eshom Creek; Eshom Valley), Badger, Tulare Co., California, USA

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A W occurrence located in sec. 14, in the NE¼ sec. 22 & in the NE¼ sec. 28, T15S, R28E, MDM, 8.1 km (5.1 miles) ESE of Badger, along Eshom Creek (N of junction of Pierce Creek & North Fork Kaweah River; SE end of Eshom Valley, ½ mile from road), on National Forest National Monument land (Sequoia National Monument and/or Bureau of Land Management administered wilderness land (Sheep Ridge Wilderness Study Area) (possibly on a patented claim [private land]). Operated in 1944. MRDS database stated accuracy for this location is 10 meters.

Mineralization is hosted in marble and granodiorite. The ore body is lenticular in form at a thickness of 2.44 meters and a length of 6.1 meters. Comprised of tactite in quartz-biotite schist. Three small, partially altered layers of marble. The ore body is exposed in trenches, no outcrops. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges) and/or pre-Cenozoic metasedimentary and metavolcanic rocks undivided.

Workings include surface and underground openings with a length of 54.86 meters and comprised of 2 short adits and trenches.

Production data are found in: Goodwin, Joseph Grant (1958).

Some ore was shipped. No production values available.

Analytical data results: 0.3 to 0.4% WO3. A small part of the tactite contains 0.5 to 1.0% WO3.

Mineral List

2 entries listed. 1 valid mineral.

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Durrell, C. (1943), Geology of the Sierra Nevada, northeast of Visalia, Tulare County, California: California Division Mines (Report 39): 39: 175.

Krauskopf, Konrad Bates (1953), Tungsten deposits of Madera, Fresno, and Tulare Counties, California: California Division Mines Special Report 35, 83 pp.: 81.

Goodwin, Joseph Grant (1958), Mines and mineral resources of Tulare County, California: California Journal of Mines and Geology (Report 54): 54(3): 445, 447-448.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10008675, 10035171, 10166015 & 10214131.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0061070111 & 0061070113.

Mineral and/or Locality  
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