湘南财神庙铅锌矿床构造地球化学及找矿预测  

Tectonic geochemistry and prospecting prediction of Caishenmiao lead-zinc deposit in southern Hunan

作　　者：郑旭 刘建平[1,2] 刘少青 李波 陈卫康 邵拥军[1,2] 丁涛 刘忠法[1,2] ZHENG Xu;LIU Jianping;LIU Shaoqing;LI Bo;CHEN Weikang;SHAO Yongjun;DING Tao;LIU Zhongfa(Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitor(Central South University),Ministry of Education,Changsha 410083,Hunan,China;School of Geoscience and Info-Physics,Central South University,Changsha 410083,Hunan,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Southwest Institute of Geological Survey Center for Non-ferrous Mineral Resources,Kunming 650093,Yunnan,China)

机构地区：[1]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 [2]中南大学地球科学与信息物理学院,湖南长沙410083 [3]昆明理工大学国土资源工程学院/有色金属矿产地质调查中心西南地质调查所,云南昆明650093

出　　处：《矿产勘查》2021年第10期2115-2126,共12页Mineral Exploration

基　　金：国家重点研发计划项目(2018YFC0603903);国家自然科学基金资助项目(41872091)联合资助。

摘　　要：宝山铜铅锌矿田是湘南矿集区内重要的矿田,为探索矿床深边部勘查中构造地球化学找矿方法的适用性,本文以矿田北部的财神庙铅锌矿床为例,在野外构造调研的基础上,在-110 m、-190 m中段开展了坑道构造地球化学研究,获得了208件构造岩石样品地球化学数据。对矿床构造岩地球化学元素开展了聚类和因子分析、因子得分等值线异常圈定,结果显示两个中段元素因子分类相近,均获得了与花岗闪长斑岩元素组合有关的因子(Nb、Th、Ga、Ge、Be、Sc、Ta、Cs、Rb、Ba、REE等),与高中温成矿元素组合的因子(Pb、Zn、Cd、Ag、In、Cu、W、Sb、Bi、Sn、As),与低温成矿元素组合的因子(Hg、Au、As、Tl)。根据各中段因子得分圈定了异常13个,综合分析提出了2个找矿靶区。研究认为构造地球化学找矿方法对湘南热液型矿床深边部矿体勘查具有重要的意义。The Baoshan copper-lead-zinc orefield is an important orefield in the southern Hunan oreconcentration area.In order to explore the applicability of the tectonic geochemical prospecting method in the mineral exploration of the deep and margin of the deposit,this paper takes the Caishenmiao lead-zinc deposit in the northern part of the Baoshan orefield as an example.Based on the field tectonic investigation,the tectonic geochemistry research was carried out in the middle section of-110m and-190m,and the geochemical data of 208 tectonite samples were obtained.The cluster analysis and factor analysis,and the abnormal delineation of the factor contour map of the elements show that the two middle element factors are classified similarly,and all of results have the factors related to the combination of granodiorite porphyry elements(Nb,Th,Ga,Ge,Be,Sc,Ta,Cs,Rb,Ba,REE,etc.),factors combined with high and medium temperature ore-forming elements(Pb,Zn,Cd,Ag,In,Cu,W,Sb,Bi,Sn,As),factors combined with low-temperature mineralization elements(Hg,Au,As,Tl).According to the scores of each mid-section factors,13 anomalies were delineated,and 2 prospecting prediction areas were proposed by comprehensive analysis.It is considered that tectonic geochemistry is of great significance to the exploration of deep and margin orebodies of hydrothermal deposits in southern Hunan.

关 键 词：构造地球化学找矿 找矿预测 热液脉型铅锌矿床 财神庙 宝山矿田 湘南 

分 类 号：P613[天文地球—矿床学] P632.2[天文地球—地质学]