河南祁雨沟隐爆角砾岩型金矿床成矿特征浅析  

Metallogenic Characteristics of Cryptoexplosion Breccia Type Gold Deposit in Qiyugou,Henan province

作　　者：田磊 许令兵 刘国华 

机构地区：[1]河南省有色金属地质矿产局第二地质大队,郑州450016

出　　处：《华南地质与矿产》2011年第3期179-183,共5页Geology and Mineral Resources of South China

摘　　要：本文以J4隐爆角砾岩体为重点研究对象,从矿床地质、热液蚀变等方面进行分析研究,认为金矿床的形成与浅成-超浅成酸性斑岩侵入体有着密切的成生联系;通过宏观及镜下观察并综合各类蚀变矿物组合之间的关系表明,热液蚀变与金成矿关系密切,蚀变在水平方向及垂直方向上具有分带性。一般而言,在垂直方向上,自岩体中心向上、向下对称分布为:石英-正长石化带、石英-黑云母化带(、弱)青磐岩化带;工业矿体主要赋存于石英-正长石化带及其与石英-黑云母化带交接部位。The geological feature and hydrothermal alteration characteristics of J4 breccia,Qiyugou area,Henan province,is investigated to reveal the close relationship between gold mineralization and intrusion of hypabyssal-superficial felsic porphyry.The paragenetic association of alterated minerals indicates that alteration zones are vertical to the intrusion： from the center to the outer margin lays from quartz-orthoclase zone,to quartz-biotite zone,and to propylitization.The industrial ore-bodies are mainly occurred to the contact area of quartz-orthoclase zone and quartz-biotite zone.

关 键 词：角砾岩型金矿床 成矿特征 蚀变分带 祁雨沟 

分 类 号：P618.51[天文地球—矿床学]