黔东南磨山—主山冲矿田地质特征及控矿因素研究  

Research on Geological Characteristics and Ore-Controlling Factors of Moshan-Zhushanchong Ore Field in Southeast of Guizhou Province

作　　者：吴波[1] 吴治君[1] 赵明峰[1] 彭慈刚[1] 斯恩智 WU Bo;WU Zhijun;ZHAO Mingfeng;PENG Cigang;SI Enzhi(117 Geological Brigade,Guizhou Geological and Mineral Exploration and Development Bureau)

机构地区：[1]贵州省地质矿产勘查开发局117地质大队,贵州省贵阳市550018

出　　处：《现代矿业》2025年第2期165-169,173,共6页Modern Mining

基　　金：册亨百地金矿找矿突破关键因素—控矿构造研究项目(编号:黔地矿科合[2023]3号)。

摘　　要：磨山—主山冲金矿田是黔东南金矿集区重要组成部分,以石英脉型金矿为主,少量为蚀变岩型金矿。为了深化矿田成矿规律和控矿因素的研究,推进找矿勘查工作,在野外调查和整理前人成果的基础上,从地质背景、特征及蚀变组合等方面,分析金矿的成矿作用和控矿因素。研究结果表明,矿田金矿形成于加里东期,成矿温度170~230℃,为中—低温;成矿流体是中低盐度、较低密度、弱酸—弱碱、由变质水和岩浆水组成的混合流体,成矿物质来源于地层围岩和深部地壳;矿床分布、矿体产出、厚度和品位变化主要受构造、岩性组合等因素制约;矿田区域背景、构造条件、岩性组合有利于成矿,矿化蚀变和地球化学异常等找矿信息丰富,表明矿田具有良好的找矿前景。Moshan-Zhushanchong gold deposit is an important part of the gold accumulation area in southeast Guizhou Province,mainly quartz vein type gold deposit and a small amount of altered rock type gold deposit.In order to deepen the research of ore-forming laws and ore-controlling factors in ore fields and promote the ore prospecting work,the paper analyzes the ore-forming process and ore-controlling factors of gold deposits from the aspects of geological background,geological characteristics and alteration combina-tion on the basis of field investigation and sorting out previous results.The results show that the gold deposit is formed in the Caledonian period.The metallogenic temperature is 170~230℃,which is medium to low temperature.The ore-forming fluid is a mixture of low salinity,low density,weak acid-alkali,metamorphic water and magmatic water,and the ore-forming material comes from the surrounding rock and deep crust.The distribution,output,thickness and grade of the ore deposit are mainly restricted by structural and litho-logic combinations.The regional setting,tectonic conditions and lithology combination of the ore field are conducive to mineralization,and the mineralization alteration and geochemical anomalies are rich in pros-pecting information,indicating that the ore field has a good prospecting prospect.

关 键 词：金矿 地质特征 控矿因素 

分 类 号：P618.51[天文地球—矿床学]