Pyrochroite from Russia
Russia | |
| Kassandrov, E. G., & Mazurov, M. P. (2009). Magmatogenic manganese ores of the South Minusa Intermontane Trough. Geology of Ore Deposits, 51(5), 356. |
Kassandrov, E. G., & Mazurov, M. P. (2009). Magmatogenic manganese ores of the South Minusa Intermontane Trough. Geology of Ore Deposits, 51(5), 356. | |
| Talovina, I.V., Lazarenkov, V.G., and Vorontsova, N.I. (2003): Lithology and Mineral Resources 38(5), 403-415. |