修水姜坑地区碳硅泥岩型铀矿成矿特征及找矿方向

修水董坑-东港盆地位于雪峰-九岭和修水-宁国-开化碳硅泥岩型铀矿成矿带交接部位的九瑞多金属矿集区中,盆地内已发现中、小型铀矿床各1处。姜坑地区与已知矿床分布区具有类似的岩相古地理环境和构造、岩性等成矿地质特征,显示着良好的找铀矿潜力。文章在总结近年来盆地深部找矿工作成果的基础上,通过类比分析,认为姜坑地区的铀矿成矿作用以热液叠加改造为主,受震旦系陡山沱组及其层间破碎带的联合控制,在西北部红色碎屑岩覆盖层之下有较大的找矿前景。

The Metallogenic Conditions and Prospecting Direction Analysis of Carbonate-Siliceous-Argillitic Type Uranium Ore Deposits in Jiangkeng,Xiushui

Jiangkeng area is located in intersection parts Xuefeng-Jiurui and Xiushui-Ningguo-Kaihua car-bonate-siliceous-argillitic type uranium metallogenic belt namely,xiushui Dongkeng-Donggang syncline in Jiurui polymetallic metallogenic belt.One small and medium-sized uranium deposits have been discov-ered in this syncline.The exploration area have similar lithofacies paleogeographic environment,struc-ture,lithology and other ore-forming geological characteristics which show good prospecting potential. In this paper, ore-prospecting work in recent years was summarized and analogy predecessors information was analysed, it was considered that the mineralization in this area is mainly of hydrothermal superimposed transformation which was jiontly controlled by the Zhoushantuo formation of Sinian and the interlayer fracture zone there is still a great potential for the exploration of the red beds in the northwest of the work area.