准噶尔东北缘玉勒肯哈腊苏斑岩铜矿的发现及意义  

Discovery and Significance of Yulekenhalasu Porphyry Copper Deposit on Northeast Margin of Junggar

作　　者：赵战锋[1] 薛春纪[1] 张立武[2] 王玲[3] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,地球科学与资源学院,北京100083 [2]新疆维吾尔自治区地质矿产勘查开发局第四地质大队,新疆阿勒泰836500 [3]北京矿冶研究总院,北京100044

出　　处：《有色金属》2009年第4期124-128,共5页Nonferrous Metals

基　　金：国家“十一五”科技支撑计划项目(2006BAB07B01-02);高等学校学科创新引智计划项目(B07011);长江学者和创新团队发展计划项目(IRT0755);地质过程与矿产资源国家重点实验室开放基金资助项目(GPMR0745)

摘　　要：在矿区地质测量的基础上,结合室内岩相学、矿相学以及现有资料研究新发现的玉勒肯哈腊苏斑岩铜矿。结果显示,产于哈萨克斯坦-准噶尔和西伯利亚两大板块缝合带内的玉勒肯哈腊苏铜矿两个赋矿岩体矿化特征类似,都全岩矿化,金属矿物组成简单,以黄铁矿和黄铜矿为主,空间蚀变分带比较清晰,从矿体向外围依次发育有钾长石化带、黑云母化带、绢英岩化带、青磐岩化带。H,O,S同位素显示成矿流体都是岩浆水混合大气降水,而成矿物质来源于地幔。含矿岩体分别形成于中泥盆世(381.6±2.5Ma)和早二叠世(265.6±3.7Ma),说明哈腊苏地区斑岩铜矿的形成背景不只是岛弧,还存在碰撞后的伸展环境。Based on the geological survey,as well as the indoor research on petrography and mineralography and available data,the newly discovered Yulekenhalasu porphyry copper deposit is investigated.The results show that the two ore-bearing rock-bodies in Yulekenhalasu porphyry copper deposit,occurred in the suture zone between Kazakhstan-Junggar plate and Siberian plate,have similar mineralization characteristics.Mineralization is found in the whole rocks and pyrite and chalcopyrite are the main metallic minerals.The spatial alteration zones from the ore body to the outer side are K-feldspar alteration zone, biotite alteration zone, sericitolite alteration zone and propylite alteration zone and they can be distinguished clearly. The results from the H, O, S isotope show that the ore-formingfluids are magmatic water mixed with meteoric water, and the ore forming materials are originated from the mantle. The two ore-bearing rock-bodies are formed in the Middle Devonian （381.6 ± 2.5Ma） and Early Permian （265.6 ±3.7Ma）. And therefore porphyry copper deposits in the Halasu district are formed not only in the island arc background, but also in the extensional environment after collision.

关 键 词：矿山地质 斑岩铜矿 玉勒肯哈腊苏 蚀变分带 成矿环境 

分 类 号：P618.4[天文地球—矿床学] P611[天文地球—地质学]