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本文从６２２铀矿床围岩蚀变的野外和镜下地质观察入手，结合常量元素、稀土元素地球化学综合示踪，揭示了与铀矿化密切相关的热液活动主要有两期：首先，岩浆起源的较深富钾、钠碱性热液活动及其稍晚的成矿作用形成的中等富集重稀土的碱交代－赤铁矿型铀矿化；随后，由于大气降水形成的富含氟的酸性热液的浅部地下循环水活动，导致轻、重稀土元素的进一步分馏，重稀土的高度富集以及萤石一木云母型铀矿化的叠加。并指出了广泛发育的红化、萤石化、水云母化现象、蚀变成才带内Ｐ＿２Ｏ＿５，Ｍｇｏ，ＴｉＯ＿２，ＣａＯ含量的增加，ＳｉＯ＿２，Ｎａ＿２ｏ含量的减少，ＲＥＥｔ和ＨＲＥＥ显著增高及ＬＲＥＥ／ＨＲＥＥ降低等均可作为找矿标志。
Based on the field and microscopic geological observations of wall rock alteration in 622 uranium deposit, combined with the trace elements of geochemical elements and rare earth elements, it is revealed that there are mainly two stages of hydrothermal activities that are closely related to uranium mineralization: firstly, Origin of the deeper potassium-rich, sodium-alkaline hydrothermal activity and its later mineralization formed by the enrichment of heavy rare earth alkali metamorphism - hematite-type uranium mineralization; then, due to the formation of atmospheric precipitation rich in fluorine Of the acidic hydrothermal shallow circulation of water activity, leading to further fractionation of light and heavy rare earth elements, a high degree of heavy rare earth enrichment and fluorite-mica-type uranium mineralization superimposed. The redistribution, fluorosis and hydration of the rocks show that the content of P 2 O 5, Mgo, TiO 2 and CaO increases with the increase of SiO 2 and Na 2 O contents. The REEt and HREE are significantly increased and the LREE / HREE is decreased Dengjun can be used as a sign of prospecting.