ANALYSIS ON THE METALLOGENIC CONDITION AND PROSPECTING DIRECTION OF THE URANIUM DEPOSIT IN JIANXING AREA, HEILONGJIANG PROVINCE

Based on the research of the metallogenic conditions of uranium in the Jianxing area, including the source of uranium, tectonic setting, lithology/lithofacies, sand bodies and hydrogeology, the characteristics, genesis and distribution of uranium mineralization are discussed. It is concluded that the Upper Jurassic Jianxing Formation and the Lower Cretaceous Taoqihe Formation are the main targets for sandstone-type uranium prospecting. The sandstone-type of uranium deposits in the area are mainly formed by synsedimentation with epigenetic infiltration. The favorable metallogenic positions are the eastern side of basement uplift near the provenance areas with harbor sedimentary condition. The area from the western margin of Baoshan depression to F₁ fault is the prospective area.