广西龙头山金矿围岩蚀变特征  

The Alteration Characteristics of Longtoushan Gold Deposit in Guangxi

作　　者：曹蓉[1,2] 赖健清[1,2] 钱丽华[1,2] 陶诗龙 胡理芳 游琲 

机构地区：[1]中南大学有色金属成矿预测与地质环境监测教育部重点实验室,湖南长沙410083 [2]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《南方金属》2017年第2期44-47,共4页Southern Metals

摘　　要：龙头山金矿床是与燕山晚期流纹斑岩、角砾流纹斑岩等次火山岩相有关的矿床.通过对龙头山金矿的野外调查和镜下鉴定,认为该矿床的围岩蚀变类型主要有电气石化、硅化、黄铁矿化、绢云母化和高岭石化,其中电气石化、硅化、黄铁矿化与金矿化关系最为密切;矿区围岩蚀变大致可以分为3个蚀变带:绢云母化-高岭石化蚀变带,强电气石化-硅化蚀变带和弱电气石化-硅化带.The Longtoushan gold deposit is related to late Yangshanian subvolcanic rocks such as rhyolitic porphyry and breccia rhyolitic porphyry. Through field observation and microscopic examination of Longtoushan gold deposit, the main al-terations in the studied deposit are tourmalinization, quartzitification, pyrization, sercitization, and kaolinitization. Gold mineralization is closely related to tourmalinization, quartzitification and pyrization. Alterations can be divided into three alterations zones which are sercitization-kaolinitization zone, strong tourmalinization-quartzitification zone and weak tourmalin-ization -quartzitification zone.

关 键 词：龙头山 围岩蚀变 蚀变带 金矿化 

分 类 号：P618.51[天文地球—矿床学]