Biotite from selected localities.
Austria | |
| A. Strasser: Die Minerale Salzburgs (1989) |
| C. Auer: Lapis 20(11):11-20 (1995) |
A. Strasser: Die Minerale Salzburgs (1989) |
Austria | |
| A. Strasser: Die Minerale Salzburgs (1989) |
| C. Auer: Lapis 20(11):11-20 (1995) |
A. Strasser: Die Minerale Salzburgs (1989) |