Sphalerite from selected localities.
USA | |
| Minerals of Colorado (1997) E.B. Eckel; William Crowley Kelly, Edwin Newell Goddard (1969) Telluride Ores of Boulder County, Colorado. GSA Memoir 109. |
U.S. Geological Survey Professional Paper 223 |
USA | |
| Minerals of Colorado (1997) E.B. Eckel; William Crowley Kelly, Edwin Newell Goddard (1969) Telluride Ores of Boulder County, Colorado. GSA Memoir 109. |
U.S. Geological Survey Professional Paper 223 |