巴音戈壁盆地塔木素铀矿床铀镭平衡系数研究及其地质意义  

Research on Uranium-radium Balance Coefficient of Tamusu Uranium Deposit in Bayingebi Basin and Its Geological Significance

作　　者：陈霜 王浩锋 刘波 吴丽丽 苗爱生 CHEN Shuang;WANG Hao-feng;LIU Bo;WU Li-li;MIAO Ai-sheng(Geological Party No.208,CNNC,Baotou 014010,China)

机构地区：[1]核工业二〇八大队,内蒙古包头014010

出　　处：《东华理工大学学报（自然科学版）》2022年第4期355-362,共8页Journal of East China University of Technology(Natural Science)

基　　金：中国核工业地质局项目(201903,202203-6)。

摘　　要：利用γ测井找铀是一种建立在铀镭平衡基础上的找矿技术。通过高纯锗多道γ能谱仪测定塔木素铀矿床矿化类和非矿化类岩石的铀镭含量,计算铀镭平衡系数(K_(p)),统计其频谱特征等,并研究了铀镭平衡系数与铀含量的关系。结果表明,矿化类岩石铀含量高于镭含量;而非矿化类岩石中,镭含量普遍高于铀含量。矿化类岩石的铀镭平衡系数趋于平衡,且铀镭平衡系数与铀含量不存在明显变化规律;非矿化类岩石的铀镭平衡系数偏镭,且铀镭平衡系数越大,镭含量越高。研究区发生的铀矿化是沉积物源、构造运动、氧化还原作用、水化学作用、还原介质等共同作用的结果。塔木素铀矿床基本处于铀镭平衡,非矿化类岩石铀镭平衡系数偏镭说明铀矿床破坏程度大于成矿作用,部分铀被迁出。Uranium prospecting using gamma logging is a prospecting technology based on the balance of uranium-radium.Through measuring the uranium and radium content of the mineralized and non-mineralized rocks of the Tamusu uranium deposit by high purity germanium multichannel gamma spectrometer,the uranium and radium balance coefficient(K_(p))of mineralized and non-mineralized rocks is calculated,their spectral characteristics is counted,and the relationship between the balance coefficient of uranium-radium and the content of uranium is described.The results show that the content of uranium is higher than that of radium in the mineralized rocks,whereas,the content of radium is generally higher than that of uranium in the non-mineralized rocks.The balance coefficient of uranium and radium of mineralized rocks tends to balance,and there is no obvious relationship between the balance coefficient of uranium and radium and the content of uranium.The uranium-radium balance coefficient of non-mineralized rocks is partial to radium,and the larger the uranium-radium balance coefficient,the higher the radium content.Uranium mineralization in the study area is the result of the combined effects of sediment sources,tectonic movement,oxidation-reduction,water chemistry,and reducing media.The Tamusu uranium deposit is basically in the balance of uranium and radium.The non-mineralized rock uranium and radium balance coefficient is partial to radium,indicating that the damage degree is greater than the mineralization,and part of the uranium has been moved out.

关 键 词：Γ测井 铀镭平衡 塔木素铀矿床 巴音戈壁盆地 

分 类 号：P619.14[天文地球—矿床学]