内蒙古长岭子铅锌矿地质特征及找矿前景

Geological characteristics and prospecting potential of Changling Lead-zinc ore deposit in Inner Mongolia

长岭子铅锌勘查区位于黄岗-甘珠尔庙多金属成矿带西南部,该成矿带是大兴安岭南段地区最重要的铅、锌、钨、钼、锡、铁等多金属成矿带。从地层、构造、岩浆岩等方面对矿床的成矿地质条件及控矿因素进行了研究,初步查明Ⅰ号矿带矿床成因类型为似层状矽卡岩型,赋矿层位主要是二叠系碳酸盐岩地层,矿化与矽卡岩化蚀变关系密切;Ⅱ号矿带矿床成因类型为中温热液脉型,赋矿层位主要位于构造破碎带及绿帘石化蚀变带中,矿化与绿帘石化蚀变关系密切。矿床的成因受地层、北东向断裂构造、燕山期花岗岩等因素影响。

Changling lead zinc mine is located in the southwest of Huanggang-Ganzhuermiao metallogenic belt,the metallogenic belt is the most important area in the southern section of Greater Khingan range lead,zinc,tungsten,molybdenum,tin and iron polymetallic metallogenic belt.Studied from the metallogenic geological conditions of strata,structure,magmatite,and ore controlling factors,the initial identification of No.1 ore belt,the genetic type of ore deposit for stratiform skarn type ore bearing strata is mainly Permian carbonate rock,mineralization and skarn alteration closely;No.2 ore belt the genesis type is mesothermal vein type,the ore bearing strata are mainly located in the tectonic fracture zone and epidotization alteration zone,mineralization is closely related to epidotization alteration.The genesis of the deposit is influenced by the strata,the NE trending fault structure and the Yanshan granite.