雪峰弧形成矿带西南段金矿成矿规律及成矿模式研究  

Metallogenic regularity and metallogenic model of gold deposits in the southwest of Xuefeng arc metallogenic belt

作　　者：金妮 金小燕 刘湘勤 李雄 JIN Ni;JIN Xiaoyan;LIU Xiangqin;LI Xiong(Hunan Natural Resources Affairs Center,Changsha 410004,Hunan,China)

机构地区：[1]湖南省自然资源事务中心,湖南长沙410004

出　　处：《矿产与地质》2022年第3期547-556,共10页Mineral Resources and Geology

基　　金：湖南省自然资源事务中心“湖南省地质资料二次开发与靶区优选”项目(编号:20180310)资助。

摘　　要：雪峰弧形成矿带西南段金矿成矿条件优越,找矿潜力巨大。文章以湖南省地质资料馆的研究区馆藏金矿地质矿产资料、以往专题研究和学术研究成果为基础,采用数据挖掘、实地调查、采样验证、室内研究等方式,对区内94个金矿床(点)时空分布特征、不同矿床类型共生特征、成矿特点等进行了系统研究、分析及创新,总结提出了该区金矿成矿规律和成矿模式。金矿分为石英脉型和蚀变岩型两个大类,成矿时代主要分为加里东期与印支期两期,矿体主要赋存在新元古界青白口系和南华系的板岩、砂质板岩、变质砂岩、变余凝灰质岩石中,受区域逆掩推覆大断裂及派生的NE向次级断裂、NW向次级断裂或韧脆性剪切带以及复式背斜构造控制,矿体附近与深部常发育中酸性岩体或基性岩脉,在勘查与研究过程中需结合热液蚀变开展针对性工作。The gold deposits in the southwest section of Xuefeng arc metallogenic belt has superior metallogenic conditions and great prospecting potential.This paper based on the data of gold geology and mineral resources collected in the Hunan Geological Archive,the previous monographic research and academic research achievements,adopted data mining,field investigation,sampling validation,indoor research and other methods,systematically studied,analyzed and innovated the 94gold deposits(points)of temporal and spatial distribution characteristics,symbiotic characteristics of different deposit types and metallogenic characteristics,summarized the metallogenic regularity and model of gold deposits in this area.The gold deposits are divided into quartz vein type and altered rock type,the metallogenic age is mainly divided into Caledonian period and Indosinian period,The ore bodies are mainly hosted in slate,sandy slate,metasandstone and metatuffaceous rocks of Neoproterozoic Qingbaikou system and Nanhua system,it’s controlled by the regional overthrust nappe fault and the derived NE secondary fault,NW secondary fault or ductile brittle shear zone and compound anticline structure,intermediate acid rocks or basic dikes are often developed near and deep in the ore bodies,in the process of exploration and research,targeted work should be carried out in combination with hydrothermal alteration.

关 键 词：金矿 成矿规律 成矿模式 雪峰弧 

分 类 号：P618.51[天文地球—矿床学]