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| Cameron, Eugene N., , (1954) Pegmatite investigations, 1942-45, in New England. Professional Paper 255. US Geological Survey doi:10.3133/pp255
P Cristofono collection
Cameron, Eugene N. |
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| Cameron, Eugene N., , (1954) Pegmatite investigations, 1942-45, in New England. Professional Paper 255. US Geological Survey doi:10.3133/pp255
King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
Cameron, Eugene N. |
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| King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey. |
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| King, Van (n.d.) Personal communcation. |
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| geology.com (2016) https://geology.com/gemstones/heliodor/
www.mindat.org (2005) https://www.mindat.org/locentry-34500.html
www.mindat.org (2003) https://www.mindat.org/min-6727.html
Morrill, P. (1974). Twenty Years Ago. Rocks & Minerals, 49(1), 3-10. |
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| Cameron, Eugene N., , (1954) Pegmatite investigations, 1942-45, in New England. Professional Paper 255. US Geological Survey doi:10.3133/pp255
Cameron, Eugene N. |
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| Tim Blake, Lookout Mine Owner |
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Bumpus Quarry, Albany, Oxford County, Maine, USA