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Canada | |
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| Leiper (ed.), 1966. The Agates of North America |
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USA | |
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| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 348; Richards, R.A. (1956a), Arizona agate hunting, Rocks&Min.: 31: 279-280. |
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| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 348; Richards, R.A. (1956a), Arizona agate hunting, Rocks & Minerals: 31: 279-280. |
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| |
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| Rocks & Minerals (July, 2002) |
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| Minerals of New Mexico 3rd ed. |
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| Young, M. W. 1971 Then and now at famous Graveyard Point: Gems and Minerals, no. 407, p. 16-17. Idaho, Oregon, field trip; Graveyard Point in Idaho, agate mine in Oregon. |
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| SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills" |
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| Minerals of Virginia 1990 by R. V. Dietrich |
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| Minerals of Virginia, 1990 by R. V. Dietrich |