构造叠加晕在石英脉型钨矿床攻深找盲中的应用——以赣南盘古山钨矿床盲3号脉为例  

Application of structural superimposed halo in exploring deep hidden Quartz vein tungsten deposit——Take blind vein no.3 of Pangushan tungsten deposit as an example in southern Jiangxi province

作　　者：刘翠辉 陈伟[1] 贺根文 李伟[1] LIU Cuihui;CHEN Wei;HE Genwen;LI Wei(South Jiangxi Geological Surveying Party, Jiangxi Bureau of Geological and Mineral Resources, Ganzhou 341000,China)

机构地区：[1]江西省地质矿产勘查开发局赣南地质调查大队,赣州341000

出　　处：《物探化探计算技术》2020年第4期535-542,共8页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家重点研发计划课题(2016YFC0600208-5)。

摘　　要：南岭地区地质工作程度相对较高,深部第二空间找矿已迫在眉睫,新方法、新技术及深部找矿预测模型创新已成为深部找矿取得突破的关键因素。原生晕分带研究被广泛运用于金、银、铜、铅、锌等矿床深部及外围找矿预测,取得较好找矿效果。为了探求新的钨矿床深部找矿方法,更快速有效地圈定深部预测靶区,评价深部找矿潜力,以原生晕轴向分带理论为指导,对赣南盘古山钨矿床盲3号脉6个中段沿脉采取的样品选择W、Sn、Mo、Bi、Cu、Zn、Ag、Li、Be、Mn、Ti、As、Sb、Co和Ni元素分析热液钨矿床原生晕分带特征,构建盲3号脉的深部构造叠加晕模型,定位预测深部潜力靶位。盘古山钨矿床盲3号脉原生晕分带研究表明:Mo、Sn、Bi、Cu、Zn和Ag异常晕与矿体中心相距在60 m范围内,为近矿晕指示元素;Mn、Ti、As、Sb、Co异常晕发育于钨矿体前缘,与矿体中心相距180 m^240 m,为前缘晕指示元素。根据建立的盲3号脉构造叠加晕模型,预测35 m标高靶位2个(靶位①、②),-25 m标高靶位1个(靶位③),-145 m标高靶位2个(靶位④、⑤),其中靶位①和靶位②已得到工程验证;同时指示盲3号脉成矿热液由深到浅,由东南往西北方向运移,与其成矿关系密切的隐伏花岗岩体侵位较深,预示盲3号脉东南部深部靶位④、⑤尤其靶位⑤具较大找矿潜力。The geological work in Nanling area is relatively high,so the prospecting in the second space in deep part is imminent.Innovation of new methods,new technologies and deep prospecting prediction models has become the key factor for breakthroughs in deep prospecting.The study of primary halo zoning has been widely used in deep and peripheral prospecting prediction of gold,silver,copper,lead and zinc deposits,and good prospecting results have been achieved.In order to explore new deep prospecting methods、technologies and means for tungsten deposits,delineate the deep prediction target area more quickly and efficiently,and evaluate deep prospecting potential,this paper is guided by the theory of axial zoning of primary halo,W、Sn、Mo、Bi、Cu、Zn、Ag、Li、Be、Mn、Ti、As、Sb、Co and Ni elements of samples which collected from six segments of Blind No.3 vein in the Pangushan tungsten deposit,southern Jiangxi Province,are selected to analyze the zoning characteristics of primary halo of hydrothermal tungsten deposits,and a deep structural superimposed halo model of Blind No.3 vein is constructed to locate and predict the deep potential targets.The analysis shows that the anomalous halos of Mo、Sn、Bi、Cu、Zn and Ag are commonly within 60 meter from the center of the ore body,which makes them become central halo indicators.While those of Mn、Ti、As、Sb and Co are frontal halo indicators which occur 180 to 240 meter away from downward W ore-body.According to the structural superimposed halo model of Blind No.3 vein,the paper has predicted two targets(target①,②)at 35 meter elevation,one target(target③)at-25 meter elevation and two targets(target④,⑤)at-145 meter elevation.Among them,target①and②are verified by engineering,indicating that the mineral hydrothermal fluid of Blind No.3 vein migrates from deep to shallow,from southeast to northwest.The concealed granite closely related to its mineralization has more deep emplacement.It is predicted the deep target④and⑤,especially target⑤,i

关 键 词：原生晕分带 构造叠加晕 深部找矿预测 成矿热液 盘古山钨矿床 赣南 

分 类 号：P631.1[天文地球—地质矿产勘探]