湖南铲子坪金矿原生晕特征及找矿应用——以Ⅰ矿带为例  

Characteristics of Primary Halo and Its Prospecting Application in the Chanziping Gold Deposit,Hu'nan Province——Taking the I Ore Belt as an Example

作　　者：董裕军 彭思才 吕书君 Dong Yujun;Peng Sicai;Lv Shujun(Hu'nan Provincial Natural Resources Survey Institute,Hu'nan,418000)

机构地区：[1]湖南省自然资源调查所,湖南418000

出　　处：《当代化工研究》2023年第11期140-144,共5页Modern Chemical Research

基　　金：湖南省自然资源厅科研项目“湖南省雪峰弧形构造带南西段金锑矿深部成矿预测与靶区优选”(项目编号:2017-02;2019-03);湖南省地质院科研项目“雪峰金矿田构造解析和深部矿体赋存区段预测研究”联合资助(项目编号:201918)。

摘　　要：铲子坪金矿是雪峰弧形构造带中段典型的破碎蚀变岩型金矿。本文以铲子坪金矿床地质特征为基础,通过相关性分析、聚类分析、因子分析对矿床元素亲疏关系进行分类,该矿床矿体及近矿晕元素组合为Au、Cu、Ag、Pb、Zn,前缘晕为As、Sb,尾晕为Mo、Co、Mn。采用格里戈良分带指数法确定了矿床原生晕的轴向分带序列为Pb-Sb-B-Au-Cu-Ag-Zn-Bi-Hg-Mo-Mn-As-Co,具有明显的“反分带”特征,结合原生晕分布等值线图,在矿体尾部出现前缘晕和尾晕叠加的现象,预示深部存在隐伏矿体。经ZK7906深部验证,揭露隐伏金矿体4个,对本区金矿开展原生晕地球化学研究及深部成矿预测具有一定的参考价值。The Chanziping gold deposit is a typical fractured altered rock type gold deposit in the middle section of the Xuefeng arc-shaped structural belt.This article is based on the geological characteristics of the Chanziping gold deposit,and classifies the element affinity relationship of the deposit through correlation analysis,cluster analysis,and factor analysis.The ore body and near ore halo element combinations of the deposit are Au,Cu,Ag,Pb,Zn,the front halo are As,Sb,and the tail halo are Mo,Co,Mn.The axial zoning sequence of the primary halo of the deposit is determined as Pb-Sb-B-Au-Cu-Ag-Zn-Bi-Hg-Mo-Mn-As-Co by using the Grigoryan zoning index method,which has obvious“reverse zoning”characteristics.In combination with the contour map of the distribution of the primary halo,the phenomenon of front halo and tail halo superimposition appears at the tail of the ore body,indicating that there is a concealed ore body at depth.Through the deep verification of ZK7906,4 concealed gold ore bodies are exposed,which has certain reference value for the geochemical study of primary halos and deep metallogenic prediction of gold deposits in this area.

关 键 词：铲子坪金矿 原生晕 分带指数 分布特征 

分 类 号：P618.51[天文地球—矿床学]