基于电感耦合等离子体质谱/光谱技术研究朱溪钨铜矿床原生晕地球化学特征  

Research on Geochemistry Characteristics of the Primary Halo of Zhuxi Tungsten-Copper Deposit Based on ICP-MS/AES Techniques

作　　者：苏晓云 刘善宝[2] 高虎 王成辉[2] 刘战庆[4] 胡正华[5] 刘建光[6] 陈国华[6] 万浩章[6] 

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077 [2]中国地质科学院矿产资源研究所,北京100037 [3]陕西省核工业地质调查院,陕西西安710054 [4]桂林理工大学地球科学学院,广西桂林541004 [5]江西省地质调查研究院,江西南昌330201 [6]江西省地质矿产勘查开发局九一二大队,江西鹰潭335001

出　　处：《岩矿测试》2015年第2期252-260,共9页Rock and Mineral Analysis

基　　金：江西省地质勘查基金项目"江西省塔前-赋春铜多金属成矿带成矿规律与成矿预测"(20120106);中煤科工集团西安研究院有限公司科技创新青年基金项目"煤层典型构造的槽波响应特性研究"(2015XAYQN07)

摘　　要：江西朱溪钨铜矿是近年新发现的具有超大型规模前景的钨铜矿床,本文采集了大量朱溪钨铜矿床样品,用偏振激发能量色散X射线荧光光谱、电感耦合等离子体质谱/光谱等技术分析主量和微量元素含量,根据各元素的含量水平以10种主要成矿元素(W、Sn、Bi、Mo、Pb、Zn、Cu、As、Sb、Ag)作为分析研究区原生晕地球化学特征的指示元素。结果表明,Cu、Zn、Ag、Pb和W、Bi、Sn、Mo的元素共生组合十分明显,同时W与Cu也有相关性,富集W的部位同样也富集了Cu。成矿元素在空间上的分布特征为:1同一剖面上越往北西方向,W为主的高温元素更为富集;平面上越往南西方向,W为主的高温元素更为富集;越往深部,W为主的高温元素更为富集。2Cu为主的中温元素富集深度比W为主的高温元素富集深度浅。研究认为,铜矿富集部位在中、深部(-1400^-1500 m),钨矿富集部位在深部(-1400^-1900 m),Ag、As、Sb等低温元素的富集部位更靠近地表(-1100^-1200 m)。这种剖面线上和平面上的原生晕地球化学特征为该矿床进一步勘探工作与成矿预测提供了理论依据。A new tungsten-copper deposit with large-super mineralization potential was recently discovered in the Zhuxi area,Jingdezhen city of Jiangxi Province. The primary halo research plays a very important guiding role in further exploration work. By using Polarized Energy Dispersive X-ray Fluorescence Spectrometry,Inductively Coupled Plasma-Mass Spectrometry / Atomic Emission Spectrometry,large amounts of sample analyses have been conducted.According to the contents of elements W,Sn,Bi,Mo,Pb,Zn,Cu,As,Sb and Ag,these are served as the indicators of the primary halo. The primary halo of Zhuxi tungsten-copper deposit shows that Cu,Zn,Ag and Pb have good correlation as well as W,Bi,Sn and Mo. W is also correlated with Cu. The ore-forming elements have some characteristics in space. In the same section,high temperature elements such as W are more enriched at the northwest,whereas in the plane,this performance appeared at the southwest. Overall,W-oriented high-temperature elements are more enriched at lower depths. By comparison,Cu-oriented middle-temperature elements are shallower than W. This study indicates that the Cu deposit is distributed in the medium deep part（-1400--1500 m）,W deposit in the deep part（-1400--1900 m） and Ag,As,Sb at the surface（-1100--1200 m）. This study provides a theoretical basis for mineralization forecast and further exploration.

关 键 词：朱溪钨铜矿床 原生晕 地球化学特征 偏振激发能量色散X射线荧光光谱法 电感耦合等离子体质谱法 电感耦合等离子体光谱法 

分 类 号：O657.63[理学—分析化学] O657.31[理学—化学]