Osumilite-Bearing Lavas of the Keli Highland (Greater Caucasus): Petrological and Geochemical Characteristics, Mineral Composition, and Conditions of Melt Generation. - Kaigorodova, E. N.; Lebedev, V. A.; Kartashov, P. M.; Kovalchuk, E. V.; Chugaev, A. V. (Petrology, 2024)