内蒙古继兴铅锌矿床地质特征及找矿方向  

Geological characteristics and prospecting direction of Jixing lead-zinc deposit,Inner Mongolia

作　　者：陈佳德 魏良民 李伟[2] 秦季军 柳爱新 许景轩 张志鹏 李得俊 CHEN Jiade;WEI Liangmin;LI Wei;QIN Jijun;LIU Aixin;XU Jingxuan;ZHANG Zhipeng;LI Dejun(Chifengshan Jinhongling Nonferrous Mining Co.,Ltd.,Chifeng 025420,Inner Mongolia,China;Beijing Institute of Geology for Mineral Resources Co.,Ltd.,Beijing 100012,China)

机构地区：[1]赤峰山金红岭有色矿业有限责任公司,内蒙古赤峰025420 [2]北京矿产地质研究院有限责任公司,北京100012

出　　处：《矿产勘查》2024年第S01期290-297,共8页Mineral Exploration

基　　金：赤峰山金红岭科技项目(QT-YY-T2022141)资助。

摘　　要：内蒙古继兴铅锌矿床位于大兴安岭中南段黄岗—甘珠尔庙成矿带浩布高多金属矿集区,成矿地质条件优越,是铜银铅锌多金属矿集中分布区。本文通过对矿区的地质特征,矿体与矿化蚀变特征,总结其找矿标志,对比区内典型矿床,确定其矿床成因类型,提出了找矿方向。研究结果表明:继兴铅锌矿床赋存于大石寨组粉砂质板岩与大理岩之间的矽卡岩带内,北东向层间断裂是重要的容矿构造。矿体多呈脉状、透镜状产出,主要发育粒状结构和块状构造。围岩蚀变主要为矽卡岩化、碳酸盐化。直接找矿标志为大石寨组大理岩。结合区域成矿特征及区内典型矿床研究表明,继兴铅锌矿床是接触交代-热液型矽卡岩铅锌多金属矿床,指出继兴铅锌矿床西南大理岩延伸带为下一步的找矿方向。The Jixing lead-zinc deposit in Inner Mongolia is located in the Haobugao polymetallic ore concentration area of the Huanggang-Ganzhuermiao metallogenic belt in the central and southern part of the Greater Khingan Mountains.The metallogenic geological conditions are superior and it is a concentrated distribution area of copper-silver-lead-zinc polymetallic deposits.Based on the geological characteristics,ore body and mineraliza-tion alteration characteristics of the mining area,this paper summarizes its prospecting criteria,compares the typi-cal deposits in the area,determines the genetic types of the deposits,and puts forward the prospecting direction.The results show that the Jixing lead-zinc deposit occurs in the skarn zone between the silty slate and marble of the Dashizhai Formation,and the NE-trending interlayer fracture is an important ore-bearing structure.The ore bodies are mostly veined and lenticular,mainly developing granular structure and massive structure.The wall rock altera-tion is mainly skarnization and carbonation.The direct prospecting mark is marble of Dashizhai Formation.Combined with the regional metallogenic characteristics and the study of typical deposits in the area,it is shown that the Jixing lead-zinc deposit is a contact metasomatic-hydrothermal skarn lead-zinc polymetallic deposit,and it is pointed out that the southwest marble extension zone of the Jixing lead-zinc deposit is the next prospecting direction.

关 键 词：继兴铅锌矿床 地质特征 找矿方向 矽卡岩矿床 

分 类 号：P618.41[天文地球—矿床学]