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Russia | |
| PEKOV, I.V. & NIKOLAEV, A.P. (2013) Minerals of the pegmatites and hydrothermal assemblages of the Koashva deposit (Khibiny, Kola Peninsula, Russia). Mineralogical Almanac 189(2), 7-65. |
| Pekov, I.V., Chukanov, N.V., Dubinchuk, V.T., Zadov, A.E. (2006) Middendorfite, K3Na2Mn5Si12(O,OH)36·2H2O, a new mineral from Khibiny Massif, Kola Peninsula. Proceedings of the Russian Mineralogical Society: 135(3): 42–52. |
| O.A. Ageeva data |
| Pavel.M. Kartashov (n.d.) analytical data. |
| Pekov, I. et al (2003): New Data on Minerals: 38: 20-33. Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp. [ZVMO (1991) 120, n6, 80- World of Stones 95:5-6, p. 64] |
| Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp. |
| Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp. |
Umbozero mine, Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia