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USA | |
| Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569 Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569 Earle C. Sullivan Collection specimen #20-11-P Earle C. Sullivan Collection specimen #20-11-P |
| Cruson, Daniel. (1991), Feldspar Quarries and The Mining History of Newtown. Triassic Valley Bulletin: August/September. |
| Cruson, Daniel. (1991), Feldspar Quarries and The Mining History of Newtown. Triassic Valley Bulletin: August/September. |
| 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. Lapham (1957): Epidote from Hawleyville |
| Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569 |
| Ryerson, Kathleen H. (1976): Rock Hound’s Guide to Connecticut. Pequot Press. |
Newtown, Fairfield County, Connecticut, USA