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| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Wright, L.A., et al (1953), Mines and mineral resources of San Bernardino County, California: California Journal of Mines and Geology: 49(1-2): 73-74 Tucker, W. Burling, Reid J. Sampson (1943) Mineral resources of San Bernardino County. California Journal of Mines and Geology, 39 (4) 427-549 Van Nostrand Reinholt Press: 104, 233, 301. |