江西浒坑-分宜地区1:5万水系沉积物地球化学特征研究  

Research on Geochemical Characteristics of 1∶50000 Stream Sediment in Hukeng-Fenyi Area,Jiangxi

作　　者：符海明 徐喆 吴正昌 余少文 贺彬 樊蓉 FU Haiming;XU Zhe;WU Zhengchang;YU Shaowen;HE Bin;FAN Rong(Basic Geology Institute of Jiangxi Geological Survey and Exploration Institute,Nanchang 330030,China;The First Geological Brigade of Jiangxi Geological Bureau,Nanchang 330030,China)

机构地区：[1]江西省地质调查勘查院基础地质调查所,江西南昌330030 [2]江西省地质局第一地质大队,江西南昌330030

出　　处：《东华理工大学学报（自然科学版）》2024年第3期246-257,共12页Journal of East China University of Technology(Natural Science)

基　　金：江西省“科技+地质”联合计划项目(2023KDG01003);江西省地质局青年科学技术带头人培养计划项目(2022JXDZKJR C04);中国地质调查局地质矿产调查项目(12120115029901)。

摘　　要：江西浒坑分宜地区属于武功山矿集区的一部分,是华南重要的稀有金属成矿区。为实现新一轮找矿突破,根据1∶5万水系沉积物地球化学测量成果,对元素地球化学特征进行了分析,利用元素原始数据异常、衬值异常、比值异常等方法分别圈定异常并进行对比。结果表明,衬值异常法对稀有金属找矿具有良好的指示意义。稀有金属成矿元素Ta、Nb、Li、Rb、Cs、Be与W、Sn关系密切,局部存在W、Sn形成的异常更强、范围更大,而Ta、Nb等稀有金属元素异常偏弱的情况,可能存在“上钨锡、下稀有金属”的元素垂向分带现象,建议开展“就钨找稀有金属”工作。The Hukeng-Fenyi area is part of the Wugongshan mining aggregation area in Jiangxi,which is an important rare metal mineralisation area in South China.In order to achieve a new round of breakthroughs in prospecting,based on the results of 1∶50000 stream sediment geochemical survey,the geochemical characteristics of elements were analyzed.The anomalies were delineated and compared by several methods,such as element original data anomaly,contrast value anomaly and ratio anomaly.The contrast value anomaly method has a good indicative significance for rare metal prospecting.Through the analysis of geochemical anomalies,the metallogenic elements Ta,Nb,Li,Rb,Cs and Be of rare metals are closely related to the W and Sn,and the local anomalies of W and Sn are stronger and larger,while the anomalies of Ta,Nb and other rare metal elements are weak,which may exist the vertical zoning phenomenon of“upper tungsten tin and lower rare metals”.It suggest to carry out the work of“finding rare metals by following tungsten”.

关 键 词：水系沉积物测量 地球化学 化探异常 稀有金属矿床 江西 

分 类 号：P622.3[天文地球—地质矿产勘探]