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Quartzite Mountain Quarry [1] (Quartzite Mtn Quarry; Emsco Quartzite), Quartzite Mountain, Oro Grande District, San Bernardino Co., California, USA

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Latitude & Longitude (WGS84): 34° 37' 30'' North , 117° 15' 58'' West
Latitude & Longitude (decimal): 34.625, -117.266113281


A former silica deposit/mine located in sec. 11, T6N, R4W, SBM, 2.5 km (1.6 miles) NE of Quartzite Mountain (coordinates of record) and 2.9 km (1.8 miles) S of Silver Mountain (coordinates of record). Owned & operated by the Southwestern Portland Cement Company, California (1992). MRDS database stated accuracy for this location is 100 meters.

Local rocks include Carboniferous marine rocks, unit 1 (Western Mojave Desert).

Workings include unspecified surface openings (the USGS MRDS database file infers a quarry operation in its title).

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References

Wright, L.A., et al (1953), Mines and mineral resources of San Bernardino County, California: California Journal of Mines and Geology, California Division of Mines (Report 49): 49(1-2): tabulated list No. 495, p. 166.

California Division of Mines and Geology (1981), Mines & Mineral Producers Active in California during 1980, Special Publication 58: 50.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10165091.

U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060711332.

Mineral and/or Locality  
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