湖南水口山老鸦巢金矿区隐爆角砾岩地质特征及控矿作用  

Geological characteristics and ore control of cryptoexplosive breccia in Laoyachao Gold District,Shuikoushan,Hunan

作　　者：郭闯 Guo Chuang(Geological Team No.217 of Hunan Provincial Nonferrous Metals Geological Exploration Bureau)

机构地区：[1]湖南省有色地质勘查局二一七队,湖南省衡阳市421001

出　　处：《黄金》2021年第10期24-29,共6页Gold

基　　金：中国地质调查局项目(12120113083300)。

摘　　要：老鸦巢金矿床位于水口山铅锌金银矿田的中部,是一个隐爆角砾岩型金矿床。结合以往研究成果,采用野外地质调查和室内分析相结合的方法,在详细总结矿区和矿床地质特征的基础上,对隐爆角砾岩的形态、分布、岩石学特征、分带性及控矿作用进行了分析研究。研究表明:矿区金矿体主要产于隐爆角砾岩中,形态、产状、规模及定位严格受其控制;隐爆角砾岩带受断裂F 1控制,为一向西倾斜的脉体,成分比较复杂,蚀变强烈,具有明显的水平和垂向分带特征;隐爆角砾岩及蚀变发育地段是矿区今后寻找同类型金矿体的主要方向。Laoyachao Gold Deposit is located in the middle of Shuikoushan lead-zinc-gold-silver ore field and is a cryptoexplosive breccia type gold deposit.Based on the previous research results,the method where field geological survey and laboratory analysis and testing are combined is used to study and analyze the morphology and distribution,petrological characteristics,zoning and ore control of cryptoexplosive breccia,on the basis of summarizing the geologi-cal characteristics of the mining area and the deposit in detail.The results show that the gold ore bodies are mainly produced in the cryptoexplosive breccia,and the morphology,occurrence,scale and location are strictly controlled by it.The cryptoexplosive breccia belt is controlled by fault F 1,which is a west-dipping vein body with complex composition and strong alteration,and has obvious horizontal and vertical zoning characteristics.Cryptoexplosive breccia and alteration development areas are the main direction to search for the same type of gold ore body in the future.

关 键 词：隐爆角砾岩 分带特征 控矿作用 老鸦巢金矿区 水口山铅锌金银矿田 

分 类 号：TD11[矿业工程—矿山地质测量] P618.5[天文地球—矿床学]