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Australia | |
- Coober Pedy - Everard Range Regions
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Canada | |
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| CanRockhound v.6, n.1 (2001) |
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Italy | |
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| http://www.paleofox.com/minerali_mappa_regioni_abruzzo.html |
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| G. Carobbi, F. Rodolico (1976): I Minerali della Toscana - Acc. Tosc. Sc. e Lett. "La Colombaria", Leo Olschki Ed. Firenze, pp. 278 |
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USA | |
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| MRDS database Dep. ID file #10060183, MRDS ID #TC10140. |
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| Arkansas Geological Commission |
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| Rocks & Min.: 63:118. |
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| Oakeshott, Gordon Blaisdell (1958) Geology and mineral deposits of San Fernando quadrangle, Los Angeles County, California. California Division of Mines Bulletin 172: No. 40: 130; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 286. |
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| Minerals of Colorado (1997) Eckel, E. B. |
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| "Minerals of Colorado, updated & revised", p. 15, by Eckel, Edwin B., 1997 |
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| Minerals of Colorado (1997) Eckel, E. B. |
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| R&M 77:6 pp 404-413 |
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| Mineralogy of Michigan (2004) Heinrich & Robinson |
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| Mineralogy of Michigan (2004) Heinrich & Robinson |
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| Mineralogy of Michigan (2004) Heinrich & Robinson |
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| NBMG Spec. Pub. 31 Minerals of Nevada |
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| NBMG Spec. Pub. 31 Minerals of Nevada |
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| UGMS Bull 117 Minerals and Mineral Localities of Utah |
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| Minerals of Virginia, 1990 by R. V. Dietrich |
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| Minerals of Virginia, 1990 by R. V. Dietrich |
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| Minerals of Virginia, 1990 by R. V. Dietrich |
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| Minerals of Virginia, 1990 by R. V. Dietrich |
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| John Betts photo |