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Petrographic Study of Sedimentary Iron Ore in Shendi-Atbara Basin, River Nile State, Sudan

Journal of Geological Research 2021年第1期3卷 30-38页

作者： Abubaker A.M.A.Abasher Sadam H.M.A.Eltayib El Sheikh M.Abdelrahman Mohammed M.A.Amlas intrenational university of africa Department of Economic Geology Faculty of Minerals and Petroleum-KhartoumSudan. Al Neelain university Department of Mineral Resources Faculty of Petroleum and MineralsKhartoumSudan

This paper presents the results of petrographic study of sedimentary iron ore from surface strata of the Shendi-Atbara Basin,River Nile State,*** aims of this study are to investigate the geological behavior and geological conditions affecting precipitation of sedimentary iron *** methodologies have been used to realize the objectives of this study include field work,office work and laboratory work including thin sections and polished sections *** to field observation sedimentary iron ore can broadly be considered as occurring in three major classes:Ferribands iron,ferricrete iron and oolitic iron *** modes of occurrence of iron ore were described at the outcrops and vertical sedimentary profiles revealed that the iron occurred in the study area at different types in stratigraphic sequence such as cap,bedded and interbedded conformable with Shendi *** study of iron ore in collected samples using polarized microscope and ore microscope includes study of the textures and structures of ores to obtain ore *** main types of textures and structures in studied samples are oolitic,granular,lamellar and *** to these results the origin of iron ore is formed by chemical precipitation during chemical weathering of surrounding areas in continental lacustrine *** iron ore in study area is potential for future mining works and steel industry.

关键词： Petrographic Iron ore Shendi formation Conformable Textures

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