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USA | |
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| [var. Byssolite] P. Cristofono collection, 2011 |
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| Wall, Eby, and Winter, 2004. |
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| Castle, R.O., Hepburn, J.C., Kopera, J.P. (2005). Bedrock Geologic Map of the Reading Quadrangle, Massachusetts |
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| [var. Uralite] |
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| [var. Uralite] Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County |
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| [var. Byssolite] P Cristofono collection |
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| Chute, Newton E. (1969) The talc, soapstone, and asbestos deposits of Massachusetts
USGS Open-File Report 69-39, p. 8-10. |
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| Cook, L.P. (1974) Metamorphosed Carbonate Rocks of the Nashoba Formation, Eastern Massachusetts. Cambridge, Massachusetts: Harvard University PhD Dissertation, 454 pages. |
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| |
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| [var. Uralite] Jaggar, 1898. American Geologist 21(4):203-212 |
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| [var. Uralite] Wadsworth, M.E. (1877) Notes on the Mineralogy and Petrography of Boston and Vicinity. The Intrusive Rocks in the Vicinity of Boston. In Proceedings of the Boston Society of Natural History, 19:217-238. |
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| [var. Byssolite] Rocks & Min.: 22:209. |
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| [var. Byssolite] P Cristofono collection |
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| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
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| [var. Uralite] P Cristofono collection |
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| [var. Uralite] P Cristofono collection |
Route 13 area, Lunenburg, Worcester County, Massachusetts, USA