相山矿田居隆庵矿床钍矿物特征研究  

Research on the Characteristics of Thorium Minerals in the Julongan Deposit,Xiangshan Ore Field

作　　者：孟艳宁[1,2] 范洪海 孙志富[1] 陈璋如[1] 

机构地区：[1]核工业北京地质研究院,北京100029 [2]中核铀资源勘查与评价技术重点实验室,北京100029

出　　处：《矿物岩石地球化学通报》2011年第2期180-188,共9页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金资助项目(41040019)

摘　　要：居隆庵矿床是相山矿田中一个大型的铀-钍混合矿床。通过系统的镜下显微特征研究和电子探针分析,查明了主要钍矿物和含钍矿物的种类,分析了钍的赋存状态和蚀变特征。钍的赋存状态有独立钍矿物、类质同象替换铀矿物和类质同象存在于副矿物中。相关的矿化蚀变有碳酸盐化、钠长石化、绢云母化、黄铁矿化、绿泥石化、水云母化和萤石化。本文还总结了钍(铀)矿物的赋存位置。Julongan deposit is a large uranium-thorium deposit in the Xiangshan ore field.This study investigated the thorium and thorium-bearing minerals and summarized occurrences and mineral alterations of thorium using microscope and electron microprobe techniques.The results indicated that thorium has several occurrences in the deposit,including independent thorium minerals,isomorphic form existing in uranium minerals,and micro-isomophic form lying in accessory minerals,and that mineralized alterations related with thorium are carbonation,albitization,sericitization,pyritization,chlortization,hydromicazation,and fluoritization;occurrence positions of thorium（uranium） minerals are also generalized.The above results provide materials and references for further study of the thorium minerals and deposits.

关 键 词：钍的赋存状态 钍矿化蚀变特征 铀钍混合 居隆庵矿床 

分 类 号：P619.1[天文地球—矿床学]