Nickel-bearing Pyrrhotite from California, USA


USA
California San Diego County Julian Mining District Julian ⓘ Friday Mine	Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Weber, F. Harold Jr. (1963) Geology and mineral resources of San Diego County, California. County Report 3. California Division of Mines and Geology Hudson, Frank Samuel (1922), Geology of the Cuyamaca region of California with special reference to the origin of the Nickeliferous pyrrhotite: University of California, Department of Geological Sciences Bulletin: 13: 217 Calkins, F.C. (1916), An occurrence of nickel ore in San Diego County, California: USGS Bulletin 640: 78, 79 Van Nostrand Reinholt Press: 66, 70.
Siskiyou County Klamath Mountains Callahan Mining District (Scott River Mining District) Schneider Hill ⓘ Hummer Mine	Murdoch, Joseph, Webb, Robert W. (1966) Minerals of California, Centennial Volume (1866-1966) - California Division Mines and Geology, Bulletin 189. p.1-559. Aubury, Lewis E. (1905) The Copper Resources of California. Bulletin 23. California State Mining Bureau

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