Chalcopyrite from selected localities.
USA | |
| Januzzi and Seaman (1976): Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut. |
| Dana, Edward S. (1877) On the occurrence of Garnets with the Trap of New Haven, Connecticut. American Journal of Science: s3-14(81): 215-218. |
Cinque Quarry, East Haven, New Haven County, Connecticut, USA