新疆彩虹铜多金属矿床地质特征及成因探讨  

Geological characteristics and genesis of Caihong Cu-polymetalic deposit in Xinjiang

作　　者：苏妤芸[1,2] 吕新彪[1,2] 高保明 玛依拉[1,2] 陈超[2] 李鹏[2] 刘正荣 

机构地区：[1]中国地质大学资源学院,湖北武汉430074 [2]中国地质大学地质过程与矿产资源国家重点实验室,湖北武汉430074 [3]新疆地质矿产局物化探大队,新疆乌鲁木齐830000

出　　处：《矿床地质》2011年第1期139-148,共10页Mineral Deposits

基　　金：“十一五”国家科技支撑计划重点项目“东天山-北山成矿带整体研究与找矿靶区优选评价(2007BAB25B04)”;新疆地质矿产局物化探大队委托的横向项目“新疆托克逊县彩虹铜铅锌多金属矿床成因、成矿规律与成矿预测研究”的联合资助

摘　　要：彩虹铜多金属矿床位于库米什-彩华沟-依格尔达坂多金属成矿带内,具多期成矿特征。早期的火山-沉积成矿作用形成了层状含铜黄铁矿层。第2期热液成矿作用形成了脉状、块状、团块状的铜(铅锌)矿化,氧、氢同位素及流体包裹体研究均显示,在该期矿化过程中,有岩浆流体的参与,结合钨异常及时间证据,认为该期矿化与忠宝岩体的侵入有关,且受NE向构造的控制。成矿物质来自围岩阿尔彼什麦布拉克组。矿床成因为火山沉积-岩浆热液叠加改造型。The Caihong Cu-polymetallic deposit located in the Kumux-Caihuagou-Yigeerdaban polymetallic ore belt is characterized by multi-stage mineralization.The early volcano-sedimentary metallization formed copper-bearing pyrite bed,and the late hydrothermal mineralization formed veinlike,stockwork or massive copper-lead-zinc ore,controlled by NE-trending structures.Magmatic fluid participated in mineralization of this stage,as shown by O-H isotope and fluid inclusion studies.In combination with tungsten anomaly and time evidence,the authors hold that hydrothermal mineralization was related to Zhongbao granite,whose intrusion occurred in Hercynian period.Ore-forming material probably came from the wall rock.The Caihong ore deposit is genetically of the volcanogene sedimentary-magmatic hydrothermal superposition and reformation type.

关 键 词：地质学 地球化学 热液成矿作用 流体包裹体 矿床成因 彩虹铜多金属矿床 新疆 

分 类 号：P618.41[天文地球—矿床学]