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USA | |
- East Mount Apatite Mining District
| Mineralogy of Maine,Vol 2: Mining History, Gems, and Geology. By King & Mineral News Vol. 12 No. 5 May 1996 By Douglas Watts |
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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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| 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
Mineralogical Record (1991) 22:381-393 |
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| www.mindat.org (2003) https://www.mindat.org/min-2318.html
Ongoing study of Ryerson pegmatite by Lloyd W. Alexander. |
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| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
original reference lost |
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| Morrill, 1960. NH Mines and Minerals Localities, 2nd ed. |
Berry-Havey Quarry, Poland, Androscoggin County, Maine, USA