Tetranatrolite from
Russia | |
| Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp. |
| Pekov, I. V. (2000) Lovozero Massif - History, Pegmatites, Minerals. Ocean Pictures LTD: Moscow 2000. |
Russia | |
| Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp. |
| Pekov, I. V. (2000) Lovozero Massif - History, Pegmatites, Minerals. Ocean Pictures LTD: Moscow 2000. |