云南澜沧老厂大型银铅锌多金属矿床地质地球化学特征  

GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS OF THE LAOCHANG LARGE-SCALE Ag-Pb-Zn POLYMETALLIC DEPOSIT IN LANCANG,YUNNAN

作　　者：龙汉生[1] 蒋绍平 石增龙 黄智龙[1] 罗泰义[1] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学国家重点实验室 [2]云南澜沧铅矿,云南澜沧665601

出　　处：《矿物学报》2007年第3期360-365,共6页Acta Mineralogica Sinica

基　　金：中国科学院地球化学研究所与云南澜沧老厂铅矿合作项目

摘　　要：通过对老厂银铅锌多金属矿床地质地球化学特征的系统总结,并与相关海相火山岩块状硫化物矿床的对比,认为矿床期后岩浆热液叠加特征明显,矿体直接容矿围岩为火山-沉积岩,矿床属火山-沉积岩容矿的块状硫化物矿床。为介于典型的火山岩容矿的块状硫化物矿床(VHMS)和典型沉积岩容矿的海底喷气沉积矿床(SEDEX)之间的过渡类型,其矿化特征与新疆可可塔勒铅锌矿床(伊比利亚型)相类似。Described in this paper are the geological-geochemical characteristics of the Laoehang large-scale Ag- Pb-Zn polymetallie deposit, which are compared with those of submarine volcanic-hosted massive sulfide deposits. The ore deposit has the characteristics of magma hydrothennal superimposition-reformation metallogenesis and the ore bodies hosted in volcanic-sedimentary rocks. It is suggested that the deposit belongs to a volcano-sedimentary rock-hosted massive sulfide deposit; and its mineralization characteristics are similar to those of the Keketale lead-zinc deposit （Iberian-type）. Therefore, it is suggested that the Laoehang deposit is a transitional subtype between a volcanic rock-hosted massive sulfide deposit （VHMS） and a typical sedimentary exhalative deposit （SEDEX）.

关 键 词：银铅锌多金属矿床 矿床地质地球化学 老厂 

分 类 号：P611[天文地球—矿床学] P618.4[天文地球—地质学]