新疆北部几个金、铜矿区中酸性岩的稀土元素地球化学  

REE geochemistry of intermediate-acid intrusive rocks in gold and copper deposit in North Xinjiang

作　　者：廖启林[1] 赖健清[2] 

机构地区：[1]江苏省地质调查研究院 [2]中南大学地质研究所,湖南长沙410083

出　　处：《桂林工学院学报》2003年第1期10-17,共8页Journal of Guilin University of Technology

基　　金：国家305项目96-915-03-03与96-915-02-05专题资助

摘　　要：通过对新疆北部喇嘛苏铜矿、阔尔真阔腊金矿、乔夏哈拉铜(铁)金矿、老山口铜金矿、喀拉萨依铜金矿、野马泉金矿及阿克塔斯金矿等金、铜矿区内有关中酸性侵入岩的稀土元素地球化学研究,建立了每个金、铜矿区内有关岩体的REE分布型式,探讨了各矿区中酸性侵入岩的REE地球化学特征.依据中酸性岩体与金、铜成矿的时空分布关系,分4种类型讨论了不同岩体的REE地球化学特征,并对比了各自岩体与围岩、岩体与矿石的REE特征的差异,分析了这些差异与金、铜成矿的关系,认为Eu亏损强烈的、相对富集LREE的中酸性小岩体与金、铜成矿的关系相对比较密切.In north Xinjiang ,there exist a series of intermediate-acid intrusive rocks in gold and copper deposit. Through studying REE geochemistry of some intermediate-acid intrusive rocks in following 7 gold and copper deposits: Lamasu copper deposit, Kuoerzhenkuola gold deposit, Qiaoxiahala copper (iron) and gold deposit, Laoshankou copper and gold deposit, Kalasayi copper and gold deposit, Yemaquan gold deposit and Aketasi gold deposit.The chondrite-normalized REE distribution patterns of these intermediate-acid intrusive rocks have been established and their REE geochemical characteristics have been discussed. According to spatiotemporal distributive relationship between these intermediate-acid intrusive rocks and mineralization of gold and copper, 4 kinds of REE geochemical nature related to different intermediate-acid intrusive rocks and their difference associated with host rocks and ores have been studied and generalized, and the relationship between these differences and mineralization of gold and copper is discussed. It is suggested that there is a kind of more intimate link between mineralizationn of gold and copper and those intermediate-acid intrusive rocks with lower δEu values, relatively high LREE contents.

关 键 词：新疆 酸性侵入岩 稀土元素地球化学 金矿床 铜矿床 时空分布 成矿作用 

分 类 号：P618.51[天文地球—矿床学] P618.41[天文地球—地质学]