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USA | |
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| Wandke, A., 1922, A Petrologic Study of the Cape Neddick Gabbro, A, J Sci fifth series 4:295-304 |
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| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
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| Michael W. Kieron collection |
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| P Cristofono collection |
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| Peter Cristofono collection, 2017 |
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| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
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| Perry, J.H., Emerson, B.K. (1903) The Geology of Worcester, Massachusetts. Worcester Natural History Society, 166 pages. |
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| Morrill, 1960. New Hampshire Mines and Mineral Localities. |
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| S.M. Whittemore collection |
- Great Bay National Wildlife Refuge
| Nora K. Foley, Robert A. Ayuso, Joseph D. Ayotte, Denise L. Montgomery, and Gilpin R. Robinson, Jr. (2006): Geological Assessment of Cores from the Great Bay National Wildlife Refuge, New Hampshire (USGS Scientific Investigations Report 2006-5203). |
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| Nora K. Foley, Robert A. Ayuso, Joseph D. Ayotte, Denise L. Montgomery, and Gilpin R. Robinson, Jr. (2006): Geological Assessment of Cores from the Great Bay National Wildlife Refuge, New Hampshire (USGS Scientific Investigations Report 2006-5203). |
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| [var. Pennine] Rocks & Minerals (1986): 61: 286-289 |
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| AmMin 22:279 |
Merrimack, Hillsborough County, New Hampshire, USA