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USA | |
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| 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. |
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| J. Zolan Specimen #93 |
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| 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. |
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| 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. |
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| Bill Barret Coll. Specimen, Minerals identified by Jeremy Zolan |
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| Ingerson, Earl. (1938): Uraninite And Associated Minerals From Haddam Neck, Connecticut. American Mineralogist: 23 (4): 269-276.
Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut mineralogy. |
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| Rutley, 12th Ed. (1900) |
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| Schooner, Richard. (1947): Collins Hill (Portland, Conn.) Deserted. Rocks & Minerals, vol. 22, no. 2, p. 135. |
Biermann Quarries (Bethel quarries) and tourmaline ledge, Bethel, Fairfield County, Connecticut, USA