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USA | |
| King, Van (n.d.) Personal communcation. King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. T., 2009, Maine Feldspar, Families, and Feuds, book in press. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, Van (n.d.) Personal communcation. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, Van (n.d.) Personal communcation. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey. King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
| King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey. King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |
| King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3. |
| King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3. |
| Cheney, John T., Guidotti, Charles V. (1973) Paragonite contents of coexisting, but texturally different, muscovites from pelitic schists of the Puzzle Mountain area, Maine. American Mineralogist, 58 (11-12) 1076-1079 |
| King, Van (n.d.) Personal communcation. |
| Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey |
| www.mindat.org (2003) https://www.mindat.org/min-241.html Found during ongoing study of Ryerson Hill by Lloyd W. Alexander in 2021. Optically confirmed. |
| Dionne, Dick & Birtic, Cal & Jacobson, Mark. (2014) The Perry petalite prospect of Peru, Maine.. Mineral News. 30. 6,8,9,11,13. C. Burtic & R. Dionne collections. |
| Tim Blake, Lookout Mine Owner |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, V. (ed), 2009, Maine Feldspar, Families, and Feuds. |
| King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey. |