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| Mineral Specimen Study (1990 Crown Jewel mine discovery description), Jan.
Bernstein, D. 1996. Personal Communication with Scott L. Ritchie |
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| Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
Osborn, P. 2006. Personal communication between Philip Osborn, Hemet CA. (discoverer/owner) and Scott L. Ritchie, SDMC
07/25. |
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| Webb, R. W. 1942. Two Andalusite Pegmatites from Riverside County, California. The American Mineralogist. 28(11-12):581-593. |
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| San Diego Mining Company (1998), Sly Rick lode field analysis and valuable mineral discovery, Jan. |
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| San Diego Mining Company (1998), Anita mine field analysis, Jan. |
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| Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau |
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| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 315
Rynerson, F. J. 1967. Exploring and Mining Gems & Gold in the West
Naturegraph Publishers, Inc., Happy Camp, California: Chapter 17: 118-120 |
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| DeVito, Fred, Ordway, Al (1984) The Jensen Quarry, Riverside County, California. The Mineralogical Record, 15 (5) 273-290
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
Cooney, R.L. (1956), The mineralogy of the Jensen and Henshaw quarries near Riverside, California: Unpublished Master’s thesis, University of California at Los Angeles: 15, 36
Van Nostrand Reinholt Press: 348. |
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| (Widespread in many California collections, some showing asterism when appropriately cut.) |
Cahuilla Mining District, Riverside County, California, USA