Quartz from selected localities.
USA | |
| Minerals of Colorado (1997) Eckel, E. B.; USGS Prof. Paper 227 |
| Eckel, E. (1997): Minerals of Colorado; Tschernich, R. (1992): Zeolites of the World, p.113 |
Minerals of Colorado (1997) Eckel, E. B. |
USA | |
| Minerals of Colorado (1997) Eckel, E. B.; USGS Prof. Paper 227 |
| Eckel, E. (1997): Minerals of Colorado; Tschernich, R. (1992): Zeolites of the World, p.113 |
Minerals of Colorado (1997) Eckel, E. B. |