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众所周知,铀-钛-磷矿化生成于交代蚀变的灰岩和砂岩中。在对岩浆期后铀矿化作用的评价中,有人着重强调沥青铀矿和铀钛酸盐是在细脉矿化发育阶段形成的,而含铀磷灰石既与交代的矿物又与细脉的矿物有关。已确定由沥青铀矿、铀钛酸盐和含铀磷灰石构成的铀矿化作用是与热液交代形成物相伴生,这些矿物是在交代置换围岩(复成份砂岩、钙质砂岩、泥灰岩)中造岩矿物过程中沉积而成的,它们与细脉中的矿物并没有明显的联系。该区研究表明,含铀的热液交代作用包括两个阶段:淋滤(交代作用)和沉积作用(细脉)阶段。交代阶段分布广泛,而细脉阶段分布窄小。在淋滤阶段,新生的交代矿物取代置
It is well known that uranium-titanium-phosphate mineralization occurs in altered limestone and sandstone. In the evaluation of uranium mineralization after the magmatic period, it was emphasized that asphaltic uranium ore and uranium titanate were formed during the development of veinlets and mineralization, while the uranium-bearing apatite was not only related to the minerals Related to the minerals. It has been determined that uranium mineralization, which is composed of bitumen uranium ore, uranium titanate and uranium-bearing apatite, is associated with hydrothermal metasomatism that occurs during the replacement of surrounding rocks (complex sandstone, calcareous sandstone, Marl) sedimentary rocks formed during the process of mineralization, and their minerals and veins no obvious connection. Studies in this area show that the hydrothermal fluidization event containing uranium consists of two phases: leaching (metasomatic) and sedimentation (veinlet). The distribution phase is widely distributed, while the distribution of small veins narrow. In the leaching stage, newborn replacement mineral placement