Psilomelane from Karelian-Kola Alkaline Ultramafic and Carbonatitic Province, Finland/Russia
Finland | |
| Vartiainen, H. 1980 The petrography, mineralogy and petrochemistry of the Sokli carbonative massif, northern Finland. Geological Survey of Finland, Bulletin, 313 |
Russia | |
| Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp. |