【作者】 张宝林；

【导师】 李碧乐； 王辉；

【作者基本信息】 吉林大学 ， 地质工程（专业学位）， 2018， 硕士

【摘要】 哈拉河矿区位于内蒙古自治区呼伦贝尔市扎兰屯市伊其罕林场,经过核工业二〇八大队多年的地质工作,现暂定为中小型银铜铅锌多金属矿床。研究区位于大兴安岭中生代火山岩区中部,以及燕山早期第三阶段第三次侵入的花岗斑岩体。发育北东向的F13号断裂以及北西向的F1断裂。哈拉河铅多金属矿床共圈定大小17个矿体,5个主要矿体。矿体控制长度400~1200m,控制斜深14.00~279.70m,厚度1.01~1.80m。矿体走向18°~56°,呈透镜状、脉状分布。为银-铜-铅-锌矿体,含矿岩性为斜长花岗斑岩、碎裂蚀变安山。矿床黄铁矿化、硅化、绿泥石化、绿帘石、绢云母化、碳酸盐化等中低温蚀变普遍发育。在前人的研究工作的基础上,结合野外工作总结、普查工作成果,通过对哈拉河铅多金属矿区域地质背景、矿区地质背景及矿床地质特征的综合研究。认为矿床赋存于斜长花岗斑岩体上盘的内外接触带,受F13断裂控制明显,同时也F13断裂作为其导矿、容矿构造,矿体具有一系列中低温热液成矿的特点。认为哈拉河铅多金属矿床成因为浅成中低温热液脉型银铜铅锌矿床。在此基础上提取研究区地质信息、地球物理信息、地球化学信息等,分析研究综合找矿信息与矿床成矿的相关性。并据此讨论找矿方向并指导下一步找矿工作。更多还原

【Abstract】 The HalaRiver deposit area is located in the Yiqihan Forest Farm in Zhalantun City,Hulunbeier City,Inner Mongolia.It has been tentatively designated as a small-mediumsized silver-copper-lead-zinc polymetallic deposit through the geological work by the the Nuclear Industry Group 208 Brigade.The study area is located in the middle of the Mesozoic volcanic rock area of the Da Hinggan Mountains.The Mesozoic volcanic rock strata and the third intrusive granite porphyry in the third stage of Yanshan exposed in the mining area.Then grow the No.F13 fault in the northeast direction and the No.F1 fault in the northwest direction.The halariver Pb Multz-Metal deposit totally delineation 17 ore bodies,including 5 major ore bodies.The ore body controlled length is 400 to 1200 m,the controlled oblique depth is 14.00 to 279.70 m,and the thickness is 1.01 to 1.80 m.The ore body trend to 18°and 56°,and the form is enticular and vein-like.It is a silver-copper-lead-zinc ore body,and the ore-bearing lithology is the plagiogranite porphyry and the Broken Andesite.The medium-low temperature alteration of deposits such as pyrite mineralization,silicification,chlorite,epidote,sericitization and carbonation is generally developed.Based on the research work of the predecessors,combined with the field work summary and the results of the census work,the research carried out a comprehensive study on the regional geological background of the HalaRiver Pb Multi–Metal mine,the geological background of the mining area and the geological characteristics of the deposit.The research indicates that the deposit exists in the inner and outer contact zone of the upper plate of the plagiogranite porphyry,which is obviously controlled by No F13 fault,and also the fault as its ore-conducting and ore-bearing structure.The ore body has a series of medium-low temperature hydrothermal mineralization.It is believed that the HalaRiver Pb Multi–Metal deposit is formed into a medium-low temperature hydrothermal vein type silver-copper-lead-zinc deposit.Based on this,the geological information,geophysical information,and geochemical information of the study area are extracted.Analyze and study the correlation between comprehensive prospecting information and mineralization of deposits.Based on this,we will discuss the prospecting direction and guide the next prospecting work.更多还原