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通过显微镜下观察和电子探针成分分析,厘定了存在于赣南富城强过铝质产铀花岗岩黑云母、白云母、长石中的显微晶质铀矿。根据其成分及矿物组合特征并结合U-Pb同位素年龄测定判明其属原生成因。此外,采用核诱发裂变径迹法,根据白云母探测器上存在的星点状裂变径迹中心,判断造岩矿物(长石、石英)中可能存在超显微级的晶质铀矿核晶。花岗岩中原生晶质铀矿的存在一方面印证了U在Si-O聚合程度增高的花岗岩浆中易与O2-结合形成铀-氧配位多面体的化学键能理论,另一方面也成为花岗岩具有较高产铀能力的地球化学标志之一。
Microscopic observation and electron probe composition analysis determined the presence of micrite-type uranium deposits in biofacies, muscovite and feldspar of Fuchengqiang strong peraluminous ore in Gannan. According to its composition and mineral assemblage characteristics and combined with U-Pb isotope age determination of their genus was identified. In addition, nuclear induced fission track method is used to determine the possible presence of ultra-microscopic crystal nuclei of crystalline uranium ore in the rock-forming minerals (feldspar and quartz) based on the fission track center of the star-shaped fission track on the muscovite detector . The existence of primary crystalline uranium deposits in granite confirms the chemical bond theory of U, which is easy to combine with O2- to form uranium-oxygen coordination polyhedron in granite magnesia with high degree of Si-O polymerization, on the other hand, One of the geochemical indicators of high-yielding uranium capacity.