江西上饶某稀土矿地质及稀土元素地球化学特征  

Geological and Rare Earth Elements Geochemical Characteristics of Rare Earth Deposit in Shangrao,Jiangxi Province

作　　者：雷炼 余飞 王哲 吴德海 张蕊[2,3] 刘斌 LEI Lian;YU Fei;WANG Zhe;WU Dehai;ZHANG Rui;LIU Bin(Nuclear Industry Geological Bureau of Jiangxi Province Brigade Two Hundred Sixty-five;School of Resources,Environment and Jewelry,Jiangxi College of Applied Technology;State Key Laboratory of Nuclear Resources and Environment,East China University of Technology;Natural Resources Bureau of Huichang County)

机构地区：[1]江西省核工业地质局二六五大队 [2]江西应用技术职业学院资源环境与珠宝学院,江西省赣州市341000 [3]东华理工大学-核资源与环境国家重点实验室 [4]会昌县自然资源局

出　　处：《现代矿业》2021年第5期45-49,共5页Modern Mining

基　　金：江西省地质勘查基金项目(编号:20200053);核资源与环境国家重点实验室开放基金项目(编号:2020NRE03)。

摘　　要：为了研究工作区稀土矿分布规律,在系统的野外地质调查基础上,根据江西某区稀土矿的形成过程将其划分为4层,分别为基岩层、半风化层、全风化层下段、全风化层上段。借助电感耦合等离子体质谱研究手段对该区稀土矿开展了元素地球化学研究。结果表明:该稀土矿主要富集轻稀土元素,且稀土元素主要在全风化层上段富集;对比各层位的稀土元素总量发现,从原岩到全风化层下段,以物理风化作用为主,少量为化学风化作用;从全风化层下段到全风化层上段,以化学风化作用为主,即长石和稀土矿物水解形成黏土矿物以及稀土矿物离子。In order to study the distribution law of rare earth ore in the working area,based on systematic field exploration,the rare earth deposit in this area is divided into four layers.Which are bedrock layer,semi-weathering layer,lower segment of completely weathering layer and superior segment of complete weathering layer.Elemental geochemistry of the rare earth deposit was studied by means of ICP-MS.The results show that the deposit is rich in LREE,and the rare earth elements are concentrated in superior segment of complete weathering.According to the comparison of the total REE content in each layer,it is found that physical weathering is the main process from the original rock to the lower segment of completely weathering layer.The chemical weathering is the main process in the other layers,means that feldspar and rare-earth mineral hydrolyzed to clay minerals and rare earth mineral ions.

关 键 词：地质调查 稀土元素 地球化学 风化作用 

分 类 号：P618.7[天文地球—矿床学]