Chalcopyrite from selected localities.
USA | |
| Schooner, Richard. (1958): The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). |
| Gray (2005), Schooner (1958) |
Schooner (1958) |
State Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA