越城岭界牌铜钨矿区土壤地球化学特征及找矿意义  

The prospecting significance of soil geochemical characteristics in Jiepai copper-tungsten mining area,Yuechengling

作　　者：雷源保 肖荣 伍贵华 郭爱民 卜建财 陈冲 LEI Yuanbao;XIAO Rong;WU Guihua;GUO Aimin;BU Jiancai;CHEN Chong(Hunan Institute of Geological Survey,Changsha 410116,Hunan,China;Hunan Nonferrous Geology and Mining Research Information Center,Changsha 410035,Hunan,China)

机构地区：[1]湖南省地质调查院,湖南长沙410116 [2]湖南省有色地质矿业研究信息中心,湖南长沙410035

出　　处：《矿产与地质》2020年第3期530-539,共10页Mineral Resources and Geology

基　　金：中国地质调查局“中国矿产地质与成矿规律综合集成和服务:湖南省矿产资源调查成果综合集成与服务产品开发”(DD20160346);湖南省矿产地质志编制(20180306)共同资助。

摘　　要：界牌铜钨矿床位于华南雪峰山弧形构造带南段东缘加里东褶皱带与南岭EW向构造带北缘交汇部位,隶属于南岭成矿带越城岭矿集区。利用数学地质中的因子分析和R型聚类分析,结合矿区成矿地质特征,将矿区矿致异常分为以W-Sn-Bi为主的高温成矿元素组合异常和以Cu-Ag为主中低温成矿元素组合异常。通过分析W-Sn-Bi-Cu-Ag组合异常特征,发现成矿元素异常走向分布与矿区侵入构造走向一致,说明成矿作用严格受构造控制,在侵入接触带附近强烈富集成矿元素,形成具有开采价值的铜、钨矿体。利用元素组合异常及矿区地质特征,圈定5个找矿靶区。通过野外调查、槽探施工确定矿区界牌处AP1、老木冲处AP2和报木山处AP3均为致矿异常,找矿潜力良好,是今后找矿的主攻方向。Jiepai copper-tungsten deposit is situated at the intersection of north margin of Nanling EW trend tectonic belt and Caledonian fold belt of the east margin of south part of Xuefeng arc structural belt in South China.It belongs to the Yuechengling ore concentration district of Nanling metallogenic belt.The mathmatical geology methods of Factor Analysis and R Cluster Analysis are applied in this paper,with the combination of ore-forming geological characteristics,the ore-forming anomalies are divided into the W-Sn-Bi assemblage of high temperature and the Cu-Ag assemblage of middle-low temperature.The characteristics of the W-Sn-Bi-Cu-Ag anomaly indicate that the trend of element anomaly is similar to that of the intrusive structure in the region,which shows that the metallogenesis is strictly controlled by the intrusive structure.The ore-forming elements are enriched at the vicinity of the intrusive structure to form economical copper and tungsten orebodies.Five target areas have been circled out according to the elemental assemblage anomaly and geological feature in the mining area.For the field investigation and trench exploration construction,it is determined that geochemical anomaly AP1 located at Jiepai,anomaly AP2 at Laomuchong and anomaly AP3 at Baomushan in the mining area are confirmed to be the ore-forming anomalies.There is a favorable potential in the minging area to explore for economical orebodies in the future.

关 键 词：铜钨矿区 土壤地球化学测量 找矿靶区 R型聚类分析 因子分析 

分 类 号：P632[天文地球—地质矿产勘探] P618.41[天文地球—地质学]