Chalcopyrite from selected localities.
USA | |
| Januzzi, Ronald E. and David Seaman. (1976): Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut. |
| |
| Zodac, Peter. (1959), Minerals at Thomaston Dam, Connecticut; Rocks & Minerals: 34: 3. |