新疆昭苏卡拉盖雷铜钴金矿区岩石地球化学特征  

Petro-geochemistry of Kalagailei Cu-Co-Au deposit in Zhaosu county,Xinjiang

作　　者：郭鹏志[1] 沈利霞[1] 葛文胜[2] 薛运清[1] 李文圣 

机构地区：[1]天津华北地质勘查局,天津300170 [2]中国地质大学地球科学与资源学院,北京100083 [3]内蒙古矿业开发有限责任公司,呼和浩特010020

出　　处：《地质找矿论丛》2012年第3期291-299,共9页Contributions to Geology and Mineral Resources Research

摘　　要：卡拉盖雷铜钴金矿是那拉提构造带内发现的首例以Cu为主,伴生Mo,Co,Au,Pb,Zn的火山岩型热液矿床。矿区内出露的地层主要为石炭系下统大哈拉军山组火山岩地层,矿区岩浆岩主要有花岗闪长岩、闪长岩和辉绿岩脉。通过火山岩地层和侵入岩样品的地球化学分析,认为区内大哈拉军山组是一套由玄武岩、安山岩、英安岩、流纹岩组成的连续亚碱性的火山岩系列,且以钙碱性系列为主;矿区钾长花岗岩属于准铝质-过铝质岩类,碱性系列,花岗闪长岩和闪长岩属于准铝质-过铝质岩类,钙碱性-碱性系列,基性侵入岩属于弱碱性-碱性系列。稀土元素特征显示中酸性侵入岩可能属于地壳重熔型花岗岩;基性侵入岩与基性火山岩来源一致。Kalagailei is the first volcanics-hosted hydrothermal ore deposit dominated by Cu with by- products of Mo, Co, Au, Pb and Zn. in Nalati structure belt. In the mine area are mainly exposed volcan-ics of Lower Carboniferous Dahalajunshan formation. Magmatic rocks here are mainly granodiorite, dio-rite and diabase dykes. Dahalajunshan formation is made up of basalt, andesite, dacite and rhyolite. Geo-chemical analysis shows that the formation belongs to a sub-alkaline volcanic series but is dominated by calcium-alkaline series; moyite metaluminous-peraluminous rock, alkalic series; granodiorite and diorite metaluminous-peraluminous rock, calcic-alkalic to alkalic series; basic intrusive rock weak alkalic to alkal-ic series. Feature of REE indicates that moyite is derived from crust remelting and basic magmatic rock and basic volcanics are cognate.

关 键 词：卡拉盖雷铜钴金矿 火山岩型热液矿床 主量元素 微量元素 稀土元素 新疆维吾尔自 治区 

分 类 号：P584[天文地球—岩石学] P618.41[天文地球—地质学]