新疆东天山孔雀沟金矿床地质特征及找矿勘查意义  

The geological characteristics of the Kongquegou gold deposit and its implication for Au exploration in the Eastern Tianshan

作　　者：高俊宝 王璐 甘继军 赵云[3,5] 焦建刚[3] GAO Junbao;WANG Lu;GAN Jijun;ZHAO Yun;JIAO Jiangang(No.1 Geological Team,Xinjiang Bureau of Geology and Mineral Resources,Changji 831100,Xinjiang,China;Turpan Jinyuan Mining&Metallurgy Co.,Ltd.,Turpan 838000,Xinjiang,China;Key Laboratory of Western China’s Mineral Resources and Geological Engineering.Ministry of Education,Xi’an 710000,Shaanxi,China;YangshanMiningCo.,Ltd.,Urumqi 830000,Xinjiang,China;School of Earth Sciences and Resources,China University of Geosciences(Beijing)Beijing 100083,China)

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第一地质大队,新疆昌吉831100 [2]吐鲁番金源矿冶有限责任公司,新疆吐鲁番838000 [3]西部矿产资源与地质工程教育部重点实验室,陕西西安710000 [4]新疆阳山矿业有限公司,新疆乌鲁木齐830000 [5]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《矿产勘查》2024年第12期2216-2225,共10页Mineral Exploration

基　　金：西部矿产资源与地质工程教育部重点实验室(长安大学)开放基金(300102263505)资助。

摘　　要：孔雀沟金矿床位于新疆东天山康古尔剪切带南缘的次级剪切带之中,是该地区新发现的金矿床。根据脉体穿插关系、矿物共生组合将成矿过程划分为石英-黄铁矿-绢云母阶段、石英-多金属硫化物阶段以及石英-绿泥石-方解石阶段。黄铁矿和毒砂为主要载金矿物,自然金以包体金或裂隙金的形式产出,成色为775~919,指示为中低温成矿环境。孔雀沟金矿床与东天山其他造山型金矿具有相似的地质特征和矿化形式,认为是受康古尔韧性剪切作用控制的造山型金矿床。该金矿的发现也指示了东天山西段仍具有较好的金矿勘查潜力,下志留统乌勇布拉克组+次级断裂交汇是东天山西段寻找受变形带控制造山型金矿的关键地质指标。The newly-discovered Kongquegou Au deposit in the secondary shear zone at the southern margin of the Kanggur ductile shear zone in the Eastern Tianshan,Xinjiang.According to the cross-cutting relationships and mineral assemblage,the mineralization processes of the Kongquegou Au deposit can be divided into three stages:quartz-pyrite-sericite,quartz-polymetallic sulfide and quartz-chlorite-calcite.Gold is mainly hosted by pyrite and arsenopyrite,which occurs as inclusions or in the microfissure.The fineness of native gold varies from 775 to 919,which indicates a medium-temperature condition.In summary,the Kongquegou Au gold deposit shares similar geological characteristic with other typical orogenic gold deposits in the Eastern Tianshan.We suggest that the Kongquegou Au gold deposit can be classified as orogenic class,which is controlled by the Kanggur ductile shear activities.The discovery of this gold deposit implies that the great potential of Au exploration in the west segment of the Eastern Tianshan.The Lower Silurian Wuyongbulake Formation and secondary fault junction are critical indictors for further Au exploration in the Eastern Tianshan.

关 键 词：东天山 孔雀沟金矿床 矿床类型 找矿前景 

分 类 号：P611.13[天文地球—矿床学]