西天山备战铁矿一带大哈拉军山组火山岩岩石地球化学特征与地质意义

摘要

Beizhan iron ore is located in the awulale iron-copper metallogenic belt,it’s iron ore resources are very rich, genetic type is also very complex.After the analysis on major elements,trace elements and REE of volcanic rock samples in Dahalajunshan formation,it is suggest that petrochemical type in study area is intracontinental tholeiite series and calc-alkaline series,and was closely related to mineralization.The lithology is mainly littoral facies mafic volcanic lava,acidic volcanic lava with a small amount of pyroclastic rocks and normal sedimentary take second place.It has important pros-pecting significance to research the geochemical characteristics and tectonic environment of Dahalajunshan formation volcanic rocks from Beizhan iron deposit in Western Tianshan%　　新疆西天山备战铁矿位于阿吾拉勒铁铜成矿带，其铁矿资源丰富，成因类型复杂。对研究区大哈拉军山组火山岩样品进行主量元素、微量元素及稀土元素等测试分析认为，区内岩石化学类型属陆内拉斑玄武岩系列及钙碱性系列，与成矿关系密切。岩性主要为一套滨海相中基性火山熔岩，次为酸性火山熔岩夹少量火山碎屑岩、正常沉积岩。通过对西天山备战铁矿一带大哈拉军山组火山岩岩石地球化学特征及构造环境研究，对分析矿床成因指导找矿具重大意义。