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USA | |
| Brush and Dana (1878) first paper |
| Moritz, Harold (n.d.) Personal Communication. |
| Moritz, Harold (n.d.) Personal Communication. |
| 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. Januzzi, Ronald (1959) The Minerals of Western Connecticut and Southeastern New York State.. The Mineralogical Press, Danbury, Connecticut. |
Coe's Mine, Litchfield, Litchfield County, Connecticut, USA