FEATURES OF FORMATION, MATERIAL COMPOSITION AND GEOLOGICAL STRUCTURE OF RARE METAL AND PEGMATITE DEPOSITS OF THE KALBA REGION ON THE EXAMPLE OF THE YUBILEINOE DEPOSIT

ОСОБЕННОСТИ ФОРМИРОВАНИЯ, ВЕЩЕСТВЕННОГО СОСТАВА И ГЕОЛОГИЧЕСКОГО СТРОЕНИЯ РЕДКОМЕТАЛЛЬНЫХ ПЕГМАТИТОВЫХ МЕСТОРОЖДЕНИЙ КАЛБИНСКОГО РЕГИОНА НА ПРИМЕРЕ ЮБИЛЕЙНОГО МЕСТОРОЖДЕНИЯ
Oitseva T.A. Dyachkov B.A. Bissatova A.Ye. Orazbekova G.B. Zinyakin S.S.
2023 Tomsk Polytechnic University, Publishing House

Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering
2023 #334 Issue 7 164 - 176 pp.

The relevance of the research is caused by the lack of knowledge on the behavior of rare metal in pegmatite ore formation in the Kalba region and the need to expand the rare-metal mineral resource base of the region and to establish geological and mineragenic mapping. The aim of the research is to identify the features of geotectonic development, geological structure and material composition of the rare-metal deposit Yubileinoe (Kalba region). Study area: large industrial rare metal deposit Yubileinoe and its mineral complexes. Methods: detailed geological-geochemical and mineralogical study of the region of work, use of materials from works of previous years, stock literature, as well as laboratory studies (mass spectrometric, microprobe, geochronological and other studies). The structural relationships of minerals with each other, as well as the geochemical interpretation of the results of laboratory studies, were taken into account during diagnosing mineral complexes. Results. Spatial and genetic relationship of rare-metal pegmatite deposit (Nb, Ta, Be, Cs, Li, Sn) with granites of the I phase of the Kalba complex P1 (285 Ma), is distinguished. In the location of the Yubileinoe deposit, the leading ore-controlling role is given to the system of deep latitudinal faults of ancient origin, renewed in the Hercynian cycle. A geological and genetic model of rhythmically pulsating rare-metal pegmatite formation of the Yubileinoe deposit is presented, which reflects the zonal development of mineral complexes from oligoclase-microcline (barren) to albite, greisen, spodumene-containing and pollucite-bearing (ore) with an increasing concentration of mineralization. Information was obtained on the composition of pegmatite ores with the release of typomorphic minerals (clevelandite, lepidolite, colored tourmalines, spodumene, pollucite, ixiolite, etc.) and the main geochemical elements of rare metal ore formation (Nb, Ta, Be, Cs, Li, F, P, etc.).

forecasting , granitoid , Kalba region , modeling , rare metals (Nb, Ta, Be, Cs, Li, etc.) , Yubileinoe deposit

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D. Serikbayev East Kazakhstan Technical university, 69, Protozanov street, Ust-Kamenogorsk, 070004, Kazakhstan
LLP «Geos», 123-197, Protozanov street, Ust-Kamenogorsk, 070004, Kazakhstan
Altai Geological and Environmental Institute LLP, 21, Karl-Liebknecht street, Ust-Kamenogorsk, 070004, Kazakhstan
Shakarim university Semey, 20a, Glinka street, Semey, 071400, Kazakhstan

D. Serikbayev East Kazakhstan Technical university
LLP «Geos»
Altai Geological and Environmental Institute LLP
Shakarim university Semey

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