摘要
白市化山锂矿床为宜丰地区近年新发现的超大型花岗岩型锂矿床,估算Li_(2)O资源量超100万t,平均品位为0.39%。为研究围岩蚀变及探讨矿床成因,在野外地质调查的基础上,开展了岩相学观察和Li_(2)O含量分析。结果表明,白市化山锂矿床成矿岩体为白水洞白云母(二长)花岗岩,与成矿关系密切的蚀变为钠长石化、白(锂)云母化。该矿床围岩蚀变具有明显的分带性,平面上由南西往北东、垂向上自上而下可以划分为强、中、弱钠长石化锂云母化白云母(二长)花岗岩三个蚀变矿化带。该矿床是岩浆高度分异演化使锂等稀有金属逐步富集形成,岩浆期后热液蚀变作用促使Li富集在花岗岩顶部、边部及其外接触带浅色云母中。
The Baishihuashan lithium deposit is a newly discovered super-large granite-type lithium deposit in Yifeng area.The estimated amount of Li_(2)O resources of the deposit exceeds one million tons,with an average grade of 0.39%.To research wall rock alteration and explore the genesis of the deposit,field geological investigations were conducted,followed by petrographic observations and Li_(2)O content analysis.The results indicate that the mineralized rock of the mass of Baishihuashan lithium deposit is muscovite(monzonitic)granite.The alteration closely related to mineralization are albitization and muscovite(lithium).The wall rock alteration of the deposit has obvious zonation.Horizontally from southwest to northeast,it can be divided into three alteration mineralization zones:strong,medium and weak albite lepidolite muscovite(monzonitic)granite.Vertically from top to bottom,it can also be divided into the above mentioned three alteration mineralization zones.The deposit is formed by the gradual enrichment of rare metals such as Li due to the high differentiation and evolution of magma.The post-magmatic hydrothermal alteration resulted in the enrichment of Li in light-colored mica at the top,edges,and outer contact zones of the granite.
作者
刘丛
赵立民
潘春蓉
张勇
戴浩橦
徐欣宇
潘家永
LIU Cong;ZHAO Limin;PAN Chunrong;ZHANG Yong;DAI Haotong;XU Xinyu;PAN Jiayong(Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China;Mineral Exploration Institute of Jiangxi Geological Survey and Exploration Institute,Nanchang 330038,China;Jiangxi Provincial Key Laboratory of Genesis and Prospect for Strategic Minerals,East China University of Technology,Nanchang 330013,China)
出处
《东华理工大学学报（自然科学版）》
CAS
北大核心
2024年第2期164-174,共11页
Journal of East China University of Technology(Natural Science)
基金
国家自然科学基金项目(42062006)
核资源与环境国家重点实验室开放基金项目(2022NRE09,2022NRE31)
江西省地质局科技研究项目(2022JXDZKJKY02)
江西省“科技+地质”联合计划项目(2023KDG01002,2023KDG01003)
东华理工大学研究生创新专项基金项目(YC2023-S553)。
关键词
花岗岩型锂矿
围岩蚀变
白市化山
江西
宜丰
granite-type lithium ore
wall rock alteration
Baishihuashan
Jiangxi
Yifeng
作者简介
刘丛(1988-),女,硕士,从事地质矿产勘查工作。E-mail:516674590@qq.com;通信作者:张勇(1983-),男,博士,副教授,主要从事地质教学与研究工作。E-mail:zhycy2004@163.com。
