西藏墨竹工卡县那不定铅锌矿成矿地质特征及找矿远景分析  

Metallogenic geological characteristics and prospecting potential of Naweiding Pb-Zn deposit in Mozhugongka County,Tibet

作　　者：张韬[1] 周维德[1] ZHANG Tao;ZHOU Wei-de(Sichuan Metallurgical Geological Exploration Institute,Chengdu 610051,China)

机构地区：[1]四川省冶金地质勘查院,四川成都610051

出　　处：《世界有色金属》2022年第4期69-71,共3页World Nonferrous Metals

摘　　要：那不定铅锌矿位于西藏拉萨墨竹工卡县,为典型的矽卡岩型矿床,铅锌矿化主要赋存于外接触带的矽卡岩中,为近年来发现的小而富的铅锌矿床。为了进一步评价矿床远景,探讨控矿因素并为勘查开发提供地质依据,开展了含矿构造和矿床特征分析,研究结果表明:①含矿岩性主体为矽卡岩;②矿化受岩体外接触带及次级断层控制;③矿石以闪锌矿为主,其次为少量黄铜矿、方铅矿,脉石矿物有方解石、白云石、石榴子石、绿泥石、绿帘石、透辉石,次为石英,斜长石、金云母等;④矿床成因属于矽卡岩型铅锌矿床,这些新的成矿因素认知对进一步找矿和勘查设计具有指导意义。The Nading Pb-Zn deposit is located in Mozhugongka County,Lhasa,Tibet,which is a typical skarn deposit.Lead-zinc mineralization mainly occurs in skarn in the outer contact zone,and it is a small and rich Pb-Zn deposit discovered in recent years.In order to further evaluate the prospect of the deposit,explore the ore-controlling factors and provide geological basis for exploration and development,the ore-bearing structure and deposit characteristics are analyzed.The results show that:①Skarn is the main ore-bearing lithology;②Mineralization is controlled by the contact zone outside the rock and secondary faults;③The ore is mainly sphalerite,followed by a small amount of chalcopyrite and galena.The gangue minerals are calcite,dolomite,garnet,chlorite,epidote and diopside,followed by Shi Ying,plagioclase and phlogopite.④The genesis of the deposit belongs to skarn type lead-zinc deposit,and these new cognition of metallogenic factors has guiding significance for further prospecting and exploration design.

关 键 词：墨竹工卡 那不定 矽卡岩 铅锌矿床特征 远景 

分 类 号：P618.4[天文地球—矿床学]