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USA | |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 32-33. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 29-31. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 85-86. doi:10.3133/b404 |
| [var. Perthite] Woolley, A. R. (1987) Alkaline Rocks and Carbonatites of the World. Part 1: North and South America. |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 83. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 72-73. doi:10.3133/b404 |
| US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 57-58. doi:10.3133/b404 |
| US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 58-59. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 71-72. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 65-67. doi:10.3133/b404 |
| US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 61-62. doi:10.3133/b404 |
| US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 59-60. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 78. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 69-71. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 76-78. doi:10.3133/b404 |
| [[1]]US Geological Survey (1909) Bulletin Vol. 404, The granites of Vermont, 68-69. doi:10.3133/b404 |
| [[1]]Dale, T.N. (1923) The Commercial Granites of New England, Department of the Interior, United States Geological Survey Bulletin 738, 153-154.. |
| [var. Perthite] American Mineralogist 76:218-229, (1991). |