Freibergite Subgroup from
USA | |
| Eckhard D. Stuart (self collected 8/20/09 PXRD A. Kampf) |
Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
USA | |
| Eckhard D. Stuart (self collected 8/20/09 PXRD A. Kampf) |
Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |