鄂尔多斯盆地皂火壕砂岩型铀矿土壤元素地球化学勘查方法试验研究  

Experimental study on soil element geochemical exploration method of Zaohuohao sandstone type uranium deposit in Ordos basin

作　　者：高嘉阳 刘汉彬[2] 韩娟[2] 石晓[2] 李军杰[2] 张佳[2] 石雅静 GAO Jiayang;LIU Hanbin;HAN Juan;SHI Xiao;LI Junjie;ZHANG Jia;SHI Yajing(School of Water Resources and Environment,China University of Geosciences(Beijing),Beijing 100083,China;Beijing Research Institute of Uranium Geology,Beijing 100029,ChinaAbstract)

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]核工业北京地质研究院,北京100029

出　　处：《世界核地质科学》2024年第2期351-363,共13页World Nuclear Geoscience

基　　金：核能开发项目(编号:HTLM2101)资助。

摘　　要：为研究探索盆地砂岩型铀矿地表元素对矿体或矿化指示能力,在鄂尔多斯盆地东北部皂火壕砂岩型铀矿床开展了地表土壤元素地球化学勘查示踪试验,该砂岩型铀矿找矿主要指示元素为Sc、Cu、Pb、Th、V、Cr、Zn、U、Ti、Fe、Nb、Zr和Hf等元素和La、Ce、Pr、Nd和Sm等稀土元素(REE)。指示元素在矿体不同地球化学分带对应的地表位置具有不同的分布特征,且在铀矿化位置上方存在较为明显的异常显示,异常衬度介于1.52~3.30之间。试验结果表明:土壤微量元素和稀土元素对隐伏砂岩型铀矿体具有指示作用,指示元素异常组合可用于盆地砂岩型铀矿找矿勘查。In order to study the indicative ability of surface elements to the ore bodies or mineralization of sandstone-type uranium deposits in the basin,a trace test of geochemical exploration was carried out in Zaohuohao sandstone-type uranium deposit in northeastern Ordos basin.The main prospecting indicator elements of the sandstone-type uranium deposits are Sc,Cu,Pb,Th,V,Cr,Zn,U,Ti,Fe,Nb,Zr,Hf,and the rare earth elements La,Ce,Pr,Nd,Sm and other.The test result showed that indicator elements have different distribution characteristics at the surface positions corresponding to different geochemical zoning of the ore body,and there are obvious anomalies above the uranium mineralization position,and the anomaly contrast is between 1.52 and 3.30.Therefore the soil trace elements and rare earth elements have an indicative effect on the concealed sandstone-type uranium ore body,and the abnormal combination of indicative elements can be used for the prospecting and exploration of sandstone-type uranium deposits in the basin.

关 键 词：元素地球化学 异常分布 勘查方法 砂岩型铀矿 皂火壕矿床 

分 类 号：P631[天文地球—地质矿产勘探] P619.14[天文地球—地质学]