摘要
西藏那曲安多县抱布德铅矿位于雅鲁藏布江成矿带,带内存在多个大型—超大型矿集区,是我国具有重大找矿突破的成矿带之一。区内经过多期增生—碰撞构造活动,铜金矿、富银铅锌矿、铬铁矿、锑矿、富铁矿等具有突出优势。在综合研究矿床的地质特征与成矿背景,取得成果,抱布德铅锌矿成矿类型为中低温热液填充型铅锌矿,矿床主要受北北东向断裂及灰岩控制;北北东向次级断裂构造,硅化、碎裂岩化、碳酸盐化及黄铁矿化围岩蚀变,铅、铜、锌、银中低温元素综合异常及电阻率高极化物探异常是主要找矿标志;根据物化探异常显示,区域矿体整体异常为北西向,且在矿体集中处更为明显,进一步工作建议沿北西—南东向追踪。通过对该矿床的成矿特征研究,可为拓宽雅鲁藏布江成矿带的找矿前景提供新的参考。
Baobude Lead Mine in Anduo County,Naqu,Tibet is located in the Yarlung Zangbo River metallogenic belt.There are many large to super large ore concentration areas in the belt,which is one of the metallogenic belts with major ore prospecting breakthroughs in China.After multistage accretion collision tectonic activity,copper gold deposit,silver rich lead-zinc deposit,chromite,antimony deposit and rich iron ore have outstanding advantages.Based on the comprehensive study of the geological characteristics and metallogenic background of the deposit,achievements have been made.The Baobude lead-zinc deposit is a medium low temperature hydrothermal filling type,and the deposit is mainly controlled by NNE trending fractures and limestone.The NNE trending secondary fault structure,silicification,cataclastic lithification,carbonation and pyritization wall rock alteration,lead,copper,zinc,silver medium low temperature element comprehensive anomaly and resistivity high polarization geophysical anomaly are the main prospecting indicators.According to the geophysical and geochemical anomalies,the overall anomaly of the regional ore body is NW,and more obvious at the concentration of ore bodies.Further work suggests tracing along the NW-SE direction.The study on the metallogenic characteristics of the deposit can provide a new reference for broadening the prospecting prospects of the Yarlung Zangbo River metallogenic belt.
作者
张传东
靳贝贝
孙军胜
王秋平
翟志保
Zhang Chuandong;Jin Beibei;Sun Junsheng;Wang Qiuping;Zhai Zhibao(The Third Geological Exploration Institute of Henan Provincial Bureau of Geology and Mineral Exploration and Development,Zhengzhou 450000,China;Metal and Mineral Deep-hole Drilling Engineering Technology Research Center of Henan Province,Zhengzhou 450000,China)
出处
《能源与环保》
2022年第12期106-112,共7页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
河南省地质矿产勘查开发局地质勘查基金项目(豫地矿[2013]01-02-01)。
关键词
铅矿
中低温热液填充型
断裂控矿
电阻率高极化
lead ore
medium low temperature hydrothermal filling type
fault ore control
high resistivity and polarization
