西藏拉屋铜锌矿床成因探讨  

Discussion on the genesis of the Lawu copper-zinc deposit,Tibet

作　　者：何国朝[1] 赵延朋[1] 原恩慧 张雪亮[1] 王晓曼[1] 

机构地区：[1]桂林矿产地质研究院西藏分院,桂林541004 [2]西藏华钰矿业有限公司,拉萨81000

出　　处：《矿产与地质》2009年第2期147-151,共5页Mineral Resources and Geology

摘　　要：拉屋铜锌矿床是冈底斯成矿区申扎—旁多铜银铅锌金成矿带内重要的矿床。文章总结了该矿床的形成机制,认为矿化早期形成于喷流沉积,后期得到了岩浆热液的叠加富集,F3是一条持续活动的同沉积断层,后期又是热液活动通道,是导矿储矿构造,二长花岗岩体及岩脉对早期形成的矽卡岩及矿体的形态起着破坏作用。拉屋矿床矿体为典型的喷流沉积后期热液叠加改造型矿床。据此成矿理论指导,近年在该区实际找矿勘查中,圈定了八个重点综合异常,控制了铜、锌(333以上)资源量达13.56万吨,实现了找矿的重大突破。The Lawu copper-zinc deposit is a significant deposit located at Shenzha-Pangduo Cu-Ag-Zn-Au metallogenic belt which belongs to Kailash mineralized zone.From the basic characteristics of mineralization,the paper has discussed the formation mechanism of this deposit and believed that the mineralization was processed by exhalative sedimentation at early stage and experienced superposition and enrichment of magmtic hydrothermal fluids at late stage.F3 fault is a codeposition fault that keeps active to exist as...

关 键 词：铜锌矿床 成因探讨 地质特征 喷流沉积 同沉积断层 矽卡岩型 热液叠加 拉屋 西藏 

分 类 号：P618.41[天文地球—矿床学]