二连盆地哈达图铀矿床铀矿化特征与成矿作用探讨  

Discussion on mineralization characteristics and metallization of Hadatu uranium deposit in Erlian Basin

作　　者：杜鹏飞 康世虎 苗爱生 刘武生[3] 张锋 DU Pengfei;KANG Shihu;MIAO Aisheng;LIU Wusheng;ZHANG Feng(Geologic Party No.208,CNNC,Baotou,Inner Mongolia 014010,China;Geologic Party No.243,CNNC,Chifeng,Inner Mongolia 024000,China;Beijing Research Institute of Uranium Geology,Beijing 100029,China)

机构地区：[1]核工业二〇八大队,内蒙古包头014010 [2]核工业二四三大队,内蒙古赤峰024000 [3]核工业北京地质研究院,北京100029

出　　处：《世界核地质科学》2021年第2期198-206,共9页World Nuclear Geoscience

基　　金：中国核工业地质局内蒙古二连盆地铀矿资源调查评价与勘查项目(编号:201901)资助。

摘　　要：哈达图铀矿床位于内蒙古二连盆地齐哈日格图凹陷北部,是近年国内北方沉积盆地中发现的又一大型砂岩型铀矿。通过研究区钻孔岩心详细观察,结合电子探针和扫描电镜分析,表明铀矿化多产于下白垩统赛汉组上段,其形态主要呈板状,矿石矿物以沥青铀矿为主,铀石次之。空间上,铀与黄铁矿和有机质密切相关,主要表现为吸附态和充填于裂隙、孔隙两种。结合研究区构造演化特征及年代学研究成果,探讨了哈达图矿床铀成矿作用,以期为后续矿床勘查提供依据。Hadatu uranium deposit is located in the northern part of Qiharigetu depression in Erlian Basin,Inner Mongolia.It is a large sandstone-type uranium deposit discovered in the sedimentary basins in northern China in recent years.Detailed observation of cores,electron probe and SEM analysis showed that the uranium ore bodies are mostly produced in the upper part of the Lower Saihan Formation,and main in the plate-like shape.The ore mineral is mainly pitchblende,followed by coffinite.Spatially,uranium is closely related to pyrite and organic matter,and it is mainly manifested in two types:adsorption state and filling in cracks and pores.Based on the structural evolution characteristics and the results of chronological research,the uranium metallization was discussed so as to provide a reference for subsequent deposit exploration.

关 键 词：二连盆地 哈达图铀矿床 铀矿化特征 铀成矿作用 

分 类 号：P619.14[天文地球—矿床学]