minerals Article Rare-Metal Pegmatite Deposits of the Kalba Region, Eastern Kazakhstan: Age, Composition and Petrogenetic Implications Sergey V. Khromykh 1,2,*, Tatiana A. Oitseva 3 , Pavel D. Kotler 1,2 , Boris A. D’yachkov 3, Sergey Z. Smirnov 1,4, Alexey V. Travin 1, Alexander G. Vladimirov 1, Ekaterina N. Sokolova 1,2, Oxana N. Kuzmina 3, Marina A. Mizernaya 3 and Bakytgul’ B. Agaliyeva 3 1 V.S. Sobolev Institute of Geology and Mineralogy Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia;
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[email protected] (E.N.S.) 2 Department of Geology and Geophysics, Novosibirsk State University, 630090 Novosibirsk, Russia 3 D. Serikbayev East Kazakhstan State Technical University, Ust-Kamenogorsk 070000, Kazakhstan;
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[email protected]; Tel.: +7-9-139-093-079 Received: 2 October 2020; Accepted: 14 November 2020; Published: 16 November 2020 Abstract: The paper presents new geological, mineralogical, and isotope geochronological data for rare-metal pegmatites in the Kalba granitic batholith (Eastern Kazakhstan). Mineralization is especially abundant in the Central-Kalba ore district, where pegmatite bodies occur at the top of large granite plutons and at intersections of deep faults.