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埃及西奈半岛西南部UmBogma地区是埃及著名的金属与非金属矿产区,区内盛产锰铁矿、铜矿、铀矿、高岭石和石英砂等矿产,铀矿化与三水铝石体关系密切。通过详细的野外地质调查和室内分析鉴定,从三水铝石体和铀矿(化)体的时空分布、结构构造、矿物组成、化学成分、稀土元素及微量元素特征等方面,分析探讨了该地区三水铝石体与铀矿(化)体的内在联系,认为该地区广泛发育于石炭系UmBogma组中的三水铝石体是红土化作用的结果,铀矿化与三水铝石体的关系十分密切,富含三水铝石、高岭石、蒙脱石等粘土矿物的三水铝石体是铀的良好聚集剂,在长期的表生风化过程中,从岩石活化淋滤出来的铀以微粒及超显微颗粒逐渐被三水铝石体所吸附而形成铀矿(化)体。
Um Bogog area of southwestern Sinai Peninsula in Egypt is a well-known metal and non-metallic mineral areas in Egypt, the region rich in manganese iron ore, copper, uranium, kaolinite and quartz sand and other minerals, uranium mineralization and gibbsite close . Through detailed field geological survey and laboratory analysis, this article analyzes and discusses the spatial and temporal distribution, structural structure, mineral composition, chemical composition, rare earth elements and trace element characteristics of gibbsite and uranium ore bodies It is concluded that the gibbsite, which is widely developed in the Carboniferous UmBogma Formation, is the result of lateriteification. The relationship between uranium mineralization and gibbsite Of the relationship is very close, rich in gibbsite, kaolinite, montmorillonite and other clay minerals gibbsite is a good uranium aggregation agent, in the long process of epigenetic weathering, leaching from the rock leaching out Of uranium to particles and ultra-fine particles gradually adsorbed by the gibbsite to form uranium ore body (body).