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USA | |
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| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
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| King, V. (ed.), 2009, Maine feldspar, Families, and Feuds |
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| Fred Davis discovery specimen and photograph |
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| Falster, Alexander U., Simmons, William B., Webber, Karen L., Dallaire, Donald A., Nizamoff, James W., Sprague, Raymond A. (2019) The Emmons Pegmatite, Greenwood, Oxford County, Maine. Rocks & Minerals, 94 (6) 498-519 doi:10.1080/00357529.2019.1641021 |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine. Maine Geological Survey. |
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| King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3. |
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| King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3. |
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| Dionne, Dick & Birtic, Cal & Jacobson, Mark. (2014) The Perry petalite prospect of Peru, Maine.. Mineral News. 30. 6,8,9,11,13.
King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey. |
Dunton Gem Quarry, Newry, Oxford County, Maine, USA