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USA | |
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| P. Cristofono collection (SEM-EDS analysis, 2009) |
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| King, Van (n.d.) Personal communcation. |
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| King, V. T., 2009, Maine Feldspar, Families, and Feuds, book in press. |
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| King, V. (ed.), 2009, Maine feldspar, Families, and Feuds |
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| www.mindat.org (2003) https://www.mindat.org/min-967.html
Found during 2021 study of Ryerson Hill by Lloyd W. Alexander |
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| Tim Blake and Scott Soucey specimens |
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| King, Van (n.d.) Personal communcation. |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
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| King, Van (n.d.) Personal communcation. |
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| Scott Whittemore |
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| |
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| Janules, R. (Micromounters of NE Newsletter, 4/ 2005) |
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| King, Van (n.d.) Personal communcation. |
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| A. Plante collection
R. Janules collection
A. Smith collection
et.al. |
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| Smith, Arthur E. (2005) New Hampshire mineral locality index. Rocks & Minerals, 80 (4) 242-261 doi:10.3200/rmin.80.4.242-261 |
Heath Quarry, Casco, Cumberland County, Maine, USA