- Upper Chegem volcanic caldera (Verkhnechegemskaya caldera)
| Galuskina, I. O., Galuskin, E. V., Prusik, K., Gazeev, V. M., Pertsev, N. N., Dzierżanowski, P. (2013) Irinarassite Ca3Sn2SiAl2O12 – new garnet from the Upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia. Mineralogical Magazine, 77 (6) 2857-2866 doi:10.1180/minmag.2013.077.6.11 |