阿尔泰山南缘可可塔勒式大型铅锌矿床的成矿条件分析  

METALLOGENIC CONDITIONS FOR THE KEKETALESTYLE LARGESCALE PbZnDEPOSIT ON THE SOUTHERN MARGIN OF ALTAY, XINJIANG

作　　者：秦克章 王京彬[1] 张进红 邓吉牛[1] 

机构地区：[1]有色总公司北京矿产地质研究所

出　　处：《矿产勘查》1998年第2期2-11,共10页Mineral Exploration

基　　金："八五"国家科技攻关"305"项目

摘　　要：产于阿尔泰山南缘泥盆系海相火山断陷盆地的可可塔勒式铅锌矿床，不同于典型的ＶＨＭＳ矿床与ＳＥＤＥＸ矿床，系火山岩系中沉积岩容矿的块状－浸染状硫化物型矿床。在对其地质、地球化学特征进行系统总结并与中小型矿床对比的基础上，本文分析了该类大矿的形成条件：陆缘扩张带的大地构造背景、不同级序断裂构造与火山机构控矿、分异良好的火山－岩浆活动、充分的热水淋滤作用、良好的聚矿洼地、有利的沉积建造组合以及合适的后期保存条件。它们在时空上的有机匹配是形成该类大矿床的关键。Occurred in the Devonian volcanofault basin on the southern margin of Altay, the Keketalestyle PbZn deposit was classified into a sedimentaryhosted massivedisseminated sulfide deposit in volcanic rock series, differing from the typical VHMS and SEDEX deposits. Based on systematic geologicgeochemical researches on the Keketale largescale PbZn deposit with correlation to the middlesmall sized ore deposits in this region, the paper has fully studied the orecontrolling process of tectonic setting (spreading continental margin), fracture structure order and volcanic edifice, welldifferentiated volcanicmagmatic activity, welldeveloped hydrothermal leaching, favourable oreconvergent depression and favourable sedimentary formation association as well as suitable preserving conditions in latestage. The organic coordination of these metallogenic conditions, spatially and temporally, is the key for the formation of largescale PbZn deposit of the Keketalestyle in this area.

关 键 词：可可塔勒式 铅锌矿床 麦兹-克朗盆地 新疆 

分 类 号：P618.4[天文地球—矿床学]