Citation: Galuskin, E. V.; Galuskina, I. O.; Kusz, J.; Gfeller, F.; Armbruster, T.; Bailau, R.; Dulski, M.; Gazeev, V. M.; Pertsev, N. N.; Zadov, A. E.; Dzierzanowski, P. (2015). Mayenite supergroup, part II: Chlorkyuygenite from Upper Chegem, Northern Caucasus, Kabardino-Balkaria, Russia, a new microporous mineral with "zeolitic" H2O. European Journal of Mineralogy, 27, pp. 113-122.