Calcite from selected localities.
Norway | |
| Larsen, A.O.(1978): Tangen manganforekomst. NAGS-nytt 5(4),15-18 |
Rune Fjellvang observation in field 2017 |
Norway | |
| Larsen, A.O.(1978): Tangen manganforekomst. NAGS-nytt 5(4),15-18 |
Rune Fjellvang observation in field 2017 |