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USA | |
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| P Cristofono collection , 2009 |
| Smith, Arthur E. (2005) New Hampshire mineral locality index. Rocks & Minerals, 80 (4) 242-261 doi:10.3200/rmin.80.4.242-261 |
| Smith, Arthur E. (2005) New Hampshire mineral locality index. Rocks & Minerals, 80 (4) 242-261 doi:10.3200/rmin.80.4.242-261 Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA. USGS Prof Paper 353 |
| Smith, Arthur E. (2005) New Hampshire mineral locality index. Rocks & Minerals, 80 (4) 242-261 doi:10.3200/rmin.80.4.242-261 Nicolay & Stone. Rocks and Minerals: A Guide For Collectors of the Eastern United States, NY: A.S. Barnes & Co., 1967. USGS Prof Paper 353 |
| P. Cristofono collection, 2011 |
| P Cristofono collection, 2008 |
| P Cristofono collection |
| P Cristofono collection |
Northwood, Rockingham County, New Hampshire, USA