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Pre-Visean Bauxites and Iron-Aluminum Ores Deposit of the KMA and Prospects for Developmentстатья
- Авторы: Nikulin I.I., Starostin V.I., Samsonov A.A.
- Журнал: Geology of Ore Deposits
- Том: 63
- Номер: 4
- Год издания: 2021
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 368
- Последняя страница: 381
- DOI: 10.1134/S107570152104005X
- Аннотация: Data on geology of bauxite deposits associated with rich iron ores of the weathering crust of Pre-cambrian ferruginous-siliceous shale formation within the Kursk Magnetic Anomaly (KMA) are summarized. High-grade iron ores and bauxites occur under a predominantly Paleozoic sedimentary cover at depths of over 400 m. The main potential of iron-aluminum raw materials in the region is concentrated in Bolshet-roitskoe, Vislovskoe, Olimpiyskoye and Melikhovo-Shebekinskoe deposits. Bauxite and ferralite deposits were formed during pre-Visean time after phyllitic shales of Yakovlev and Korobkovsky Formations. They consist mainly of boehmite with hematite impregnation, often with a significant admixture of kaolinite and chlorite. Average content (%) is usually Al 2 O 3 ~50.1, SiO 2 ~6.0, Fe total. ~14.0. The total bauxite potential of KMA is 1201.7 mln t (P 1 +C 1 +C 2 +B). Subsurface mining even with small projected capacity of 1.0-2.5 mln t/year would cover the deficit of alumina presently covered through import.
- Добавил в систему: Никулин Иван Иванович