Quartz from selected localities.
USA | |
| Minerals of Colorado (1997) Eckel, E. B. |
Minerals of Colorado (1997) E.B. Eckel; U.S. Geological Survey Professional Paper 223 | |
Minerals of Colorado (1997) Eckel, E. B. | |
| Minerals of Colorado (1997) Eckel, E. B. |
Minerals of Colorado (1997) Eckel, E. B. | |
Minerals of Colorado (1997) Eckel, E. B. |