广西金矿矿床类型、成矿规律及找矿方向

Type,metallogenic regularity and prospecting direction of gold deposit in Guangxi

广西金矿形成和演化具有多期次、多成因和成矿物质多来源的特点。金矿多赋存于寒武系、三叠系中,多期次的构造、岩浆活动造就了种类繁多的金矿床。矿床类型可划分为微细粒浸染型、破碎带蚀变岩型、含金石英脉型、火山—次火山岩型、矽卡岩型、砂矿型等6种类型,成矿时代以燕山期为主,空间分布可划分为桂西、桂西南、桂东、桂东南、桂北、桂中6个成矿集中区。文章从广西金矿成矿条件、矿床类型、成矿规律研究出发,提出广西金矿找矿远景区,为今后广西金矿勘查提供借鉴。

The formation and evolution of gold deposits in Guangxi are characterized by multiple stages,multiple genesis and multiple sources of ore-forming materials.Gold deposits are mostly hosted in the Cambrian and Triassic strata,and various tectonic and magmatic activities have created a variety of gold deposits.The deposit type can be divided into six types,fine grained disseminated type,broken zone altered rock type,gold-bearing quartz vein type,volcano-subvolcanic type,skarn type and placer type.The metallogenic age is mainly Yanshanian.The spatial distribution can be divided into six metallogenic concentration areas,West Guangxi,Southwest Guangxi,East Guangxi,Southeast Guangxi,North Guangxi and Central Guangxi.Based on the study of metallogenic condition,type and regularity of gold deposits in Guangxi,this paper puts forward the prospective prospecting areas of gold deposits in Guangxi,which can provide a reference for the future exploration of gold deposit in Guangxi.