摘要
本文对黔东南天柱-锦屏地区新元古界浅变质岩系中金矿的含金建造、成矿物质来源、成矿作用进行了系统研究。认为:含金建造以陆源碎屑为主,富含玄武质火山碎屑,主要形成于氧化环境;经比较纯石英脉、含金石英脉、富含毒砂的含金石英脉,可知主要成矿元素在萃取围岩物质之前就有所富集,可能部分来源较深;含金石英脉元素含量特征表明成矿物质兼有深部和围岩两种来源;各矿区热液成矿元素的浓度克拉克值及对数正态分布曲线特征,揭示出它们都产生了矿化富集;综合矿床地球化学特征及野外调查资料,推测蚀变矿化类型有三种,即金矿化、毒砂化、铅锌矿化,三者可为伴生、叠加或独立三种关系。
In Tianzhu -Jinping area, the ore -beating formation, metallogenic material source and metallogenesis of gold deposit in shallow metamorphic rock series are studied. It＇ s thought the ore - bearing formation mainly is tertigenous clastic, has abundant basaltic volcanic clastic and formed in oxidizing environment. By compare pure quartz vein, gold - beating quartz vein and arsenopyrite - bearing quartz vein, it＇ s known the main metallogenic elements has concentrated before wall rock extraction, the source may be deep. The gold - bearing quartz vein elements shows two metallogenic sources ： deep material and wall rock. The Kk and lognormal distribution Curve of hydrothermal mineralization element shows ore concentration happened in every mine area. According to mineral deposit geochemistry and field information, it inferred the alter mineralization has 3 types ： gold mineralization, arsenopyrite mineralization and lead - zinc mineralization, the relations is accompanying, stacking or independent.
出处
《贵州地质》
2013年第3期161-169,共9页
Guizhou Geology
基金
贵州省2010年度公益性
基础性地质科研项目(项目序号5)"黔东南地区金矿成矿规律及找矿靶区研究(2010-2012)"
贵州省优秀科技教育人才省长专项资金项目(黔省专合字(2009)70号)"黔东南天锦黎地区剪切带构造与找金方向研究"
关键词
地球化学
成矿作用
金矿
天柱
锦屏
黔东南
Geochemistry
Mineralization
Gold deposit
Tianzhu
Jinping
Southeast Guizhou
