西藏扎囊县朗达铜矿地质特征及找矿前景初探  

Geological characteristics and prospecting potential of Langda Cu deposit in Zhanang of Tibet

作　　者：徐伟钧[1] 喻亨祥[1] 吴荣华[1] 黄波 

机构地区：[1]桂林理工大学地球科学学院,广西桂林541004 [2]贵州省有色地质勘查局物化探总队,贵州都匀558004

出　　处：《矿产与地质》2013年第2期106-109,共4页Mineral Resources and Geology

摘　　要：朗达铜矿处于雅鲁藏布江弧―陆碰撞结合带的北侧、冈底斯陆缘火山―岩浆弧南缘,属于贡嘎―加查EW向铜多金属成矿带;产于喜山期中酸性岩浆岩的断裂带中。目前发现的2条矿(化)带呈脉状、透镜状、似层状产出,且受矿区近EW向或NWW向的断裂控制。矿石构造主要以条带状、脉状及角砾状为主,部分聚合体为斑杂状或浸染状。通过对矿区地质、矿体及矿石特征仔细分析后,认为该矿床主要受构造、岩浆热液控制,且具备良好的找矿前景。Langda Cu deposit, which is part of Gonggar-Gaca east-west Cu polymetallic metallogenic belt and originates in fractured zone of middle acidic magmatic rock in Himalaya Period, is located at the north of arc- land collision suture zone of Yarlung Zangbo River and on the southern margin of Gangdise epicontinental magmatic-volcanic arc. Two mineralization belts in vein, lenticular and layered shapes that discovered so far are controlled by near EW or NWW fractures in this mining area. Most ore structures are in banded, veined and brecciated shapes, while part of the polymers are in ataxitic or disseminated shapes. According to the careful analysis on geologic conditions, ore bodies and ore features of the mining area, structure and mag- matic hydrothermal fluid are the major controlling factors. In conclusion, this area has favorable prospecting potential.

关 键 词：铜矿 地质特征 找矿前景 朗达 西藏 

分 类 号：P618.41[天文地球—矿床学]