- Upper Chegem volcanic caldera (Verkhnechegemskaya caldera)
| Zadov, A.E., Gazeev, V.M., Karimova, O.V., Pertsev, K.N., Pekov, I.V., Galuskin, E.V., Galuskina, I.O., Gurbanov, A.G., Belakovsky, D.I., Borisovsky, S.E., Kartashev, P.M., Ivanova, A.G., Yakubovich, O.V. (2011): Magnesioneptunite KNa2Li(Mg,Fe)2Ti2Si8O24 - a new mineral of the neptunite group. Zapiski Rossiiskogo Mineralogicheskogo Obshchestva (Proceedings of the Russian Mineralogical Society), 140, 57-66. |
Lakargi Mountain, Upper Chegem volcanic caldera, Baksan Valley, Kabardino-Balkaria, Russia