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对康滇地轴中南段元古界地层中的铀矿化划分出四种类型(砂岩型、钠交代岩型、元古界浅变质岩型和石英岩型),其中以钠交代岩型为主,它具有一定的找矿前景。论述了钠交代岩铀矿化类型特征及其某些成矿问题。钠交代岩型铀矿化受钠交代岩和构造的控制。铀主要以矿物状态(沥青铀矿、晶质铀矿)存在,其晶胞参数高,含氧系数低,为中低温热液成因。成矿物质来源于地壳深部及围岩。成矿溶液除有深部的热液外,还曾有大量的大气降水参与。成矿为两期,即晋宁期和澄江期。
Four types (sandstone type, sodium metamorphic type, metamorphic shallow metamorphic rock type and quartz rock type) are divided into uranium mineralization in the Proterozoic strata in the central-southern axis of the Kangdi-Yunnan epoch. Among them, Lord, it has a prospect of prospecting. Discussed the sodium metasomatic rock uranium mineralization type characteristics and some of its metallogenic problems. Sodium metasomatic intrusive rock-hosted uranium mineralization is controlled by sodium metasomatism and tectonism. Uranium exists mainly in the mineral state (pitch uranium ore, crystalline uranium deposit), with high unit cell parameters and low oxygen partial pressure, which are the genesis of middle-low temperature hydrothermal fluids. Metallogenic materials come from deep crust and surrounding rock. In addition to mineralization solution deep hydrothermal, there have been a large number of atmospheric precipitation involved. Metallogenesis is two periods, that is, Jinning period and Chengjiang period.