湘东北虎形山钨矿床元素分带及地球化学异常模式研究  

Element zonation and geochemical anomaly model of Huxingshan tungsten deposit in Northeast Hunan

作　　者：徐军伟 赖健清[3] 陈碧莹 陈飞剑 张静鸿 XU Junwei;LAI Jianqing;CHEN Biying;CHEN Feijian;ZHANG Jinghong(The Coal Geological Exploration Institute of Hunan Province,Changsha 410000,Hunan,China;Hunan Key Laboratory of Remote Sensing of Ecological Environment in Dongting Lake Area,Changsha 410129,Hunan,China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Central South University,Ministry of Education,Changsha 410083,Hunan,China)

机构地区：[1]湖南省煤炭地质勘查院,湖南长沙410000 [2]洞庭湖生态环境遥感监测湖南省重点实验室,湖南长沙410129 [3]中南大学有色金属成矿预测与地质环境监测教育部重点实验室,湖南长沙410083.

出　　处：《矿产与地质》2022年第1期138-147,共10页Mineral Resources and Geology

基　　金：国家重点研发计划(编号:2017YFC0602400);洞庭湖生态环境遥感监测湖南省重点实验室开放课题共同资助。

摘　　要：湘东北虎形山钨矿是近年来发现的大型白钨矿床。文章从地球化学角度研究该大型钨矿床的元素分布特征,以期为下一步在研究区北侧浅部、南侧深部寻找同类型钨矿体提供地球化学方面的参考。通过分析虎形山矿床(体)原生晕元素和示矿微量元素组合在纵向上、垂向上三维空间的分布特征以及元素异常与钻孔揭露矿体在前缘晕、矿中晕、尾晕的对应关系,建立了矿床地球化学模型,有效区分和判别出Mo、Sb反映矿体前缘晕—矿中晕,Bi、Li、Be、W反映矿中晕,Zn、Pb、As反映矿中晕—尾晕,Sn、Au、Ag反映尾晕特征。矿区元素分带序列与热液矿床元素分带序列具反相关关系,表明研究区至少发生过两期或两期以上的矿化作用,说明本区矿床具多建造叠加成晕特征。Huxingshan tungsten deposit in Northeast Hunan is a large scheelite deposit discovered in recent years.In this paper,the element distribution characteristics of the large tungsten deposit are studied from the perspective of geochemistry,in order to provide a geochemical reference for the further prospecting of the same type of tungsten orebody in the study area.The geochemical model of Huxingshan deposit is established by the analysis of the longitudinal and vertical distribution characteristics of the ore elements combination of primary mineralization halo in three-dimensional space,as well as the corresponding relationship between element anomalies and the front halo,middle halo and tail halo of the orebody,which are exposed by the drilling holes.It is effectively distinguished that Mo and Sb reflect the middle-upper halo of the orebody,Bi,Li,Be and W reflect the middle halo of the orebody,Zn,Pb and As reflect the middle-tail halo of the ore body,and Sn,Au and Ag reflect the characteristics of the tail halo.The element zonation sequence of the mining area has an inverse correlation with the element zonation sequence of hydrothermal deposit,indicating that there are at least two or more periods of mineralization in the study area,reflecting the characteristics of superimposed halos of the deposits which are formed by intensive structure activities in this area.

关 键 词：钨矿床 元素分带 地球化学异常模式 找矿方向 虎形山 湘东北 

分 类 号：P632[天文地球—地质矿产勘探] P618.67[天文地球—地质学]