新疆金窝子矿田岩矿石微量元素因子分析  

Factor Analysis of Trace Elements of Jinwozi Ore Field,Xinjiang

作　　者：饶东平[1] 曹新志[1] 徐伯骏[1] 张旺生[2] 

机构地区：[1]中国地质大学资源学院,武汉430074 [2]中国地质大学地球科学学院,武汉430074

出　　处：《有色金属（矿山部分）》2010年第3期14-18,共5页NONFERROUS METALS(Mining Section）

摘　　要：通过因子分析这种常用的多元统计方法来揭示元素之间、样品之间以及与地质作用之间的相互关系,了解其中蕴藏着丰富的成矿信息,为研究成矿物质来源和成矿热液演化提供依据。金窝子矿田岩矿石微量元素R型因子分析结果表明,矿田成矿物质主要来源于地壳深部,岩浆活动与金成矿作用关系密切。成矿物质的富集经历了一个复杂而漫长的过程:岩浆活动使成矿物质活化,岩浆期后岩浆热液的形成使成矿物质初步富集,高温岩浆热液通过渗滤交代作用萃取围岩成矿物质使其进一步富集。岩浆热液演化后期,由于活性和温度降低,逐渐演变为成矿热液,亲铜元素的强烈富集是成矿热液形成的标志。Factor analysis can reveal the relationships among variables, samples, material composition and geological processes, and provide evidence for material sources and evolution of ore-forming hydrothermal. The R-factor analysis of rock and mineral trace elements show that the ore-forming materials mainly come from the deep crust, and the metallogene- sis is closely related to the magmatic activity. The enrichment of ore-forming material experienced a complex and lengthy process ： Firstly, magmatic activity makes the ore-forming material activation, then post-magmatic hydrothermal leads to the preliminary enrichment. Finally, the high-temperature magmatic hydrothermal leads to the further enrichment of materials by percolation extraction of rock-forming. As the activity and temperature decreases, magmatic-hydrothermal gradually evolved into ore-forming hydrothermal in the late period, and strong enrichment of pro-copper element is the sign of ore-forming hydrothermal.

关 键 词：因子分析 微量元素 金窝子矿田 新疆哈密 

分 类 号：P59[天文地球—地球化学]