Arsenopyrite from selected localities.
Norway | |
| Svein A. Berge collection |
Peter Andresen collection. | |
| Knut Edvard Larsen collection # 1207 |
Berg, H.-J. (1997): Norvege. Autour de la PlaNet. Le Règne Minéral. 18, 53. | |
Svein A. Berge collection/observation 1993. | |
Svein A. Berge collection 1983; Larsen, A. O.; Åsheim, A.; Raade, G. & Taftø, J. (1992): Tvedalite, (Ca,Mn)4Be3Si6O17(OH)4•3H2O, a new mineral from syenite pegmatite in the Oslo Region, Norway, American Mineralogist 77, 438-443 |