Sphalerite 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). R. M. Lytle collection |
| Schooner (1958); Shepard (1837); Gray (2005); Schairer (1931) |
Schooner (1958, 1961) |
State Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA