内蒙古东乌旗狠麦温都尔锌铜多金属矿矿床地质特征  

Characteristics of the Hei Maiwenduer Zn-Cu Polymetallic Deposit in the East Ujimqin Banner,Inner Mongolia

作　　者：刘晓阳[1] 李俊建[1] 李生[1] 张连营[1] 

机构地区：[1]天津地质矿产研究所,天津300170

出　　处：《地质调查与研究》2012年第4期241-246,共6页Geological Survey and Research

基　　金：国家地质调查项目:内蒙古东乌旗狠麦温都尔一带铜多金属矿评价(1212010631202)

摘　　要：内蒙古东乌旗狠麦温都尔锌铜多金属矿床位于大兴安岭-东蒙晚古生代-中生代铜、铁、铅、锌、银、锡、钼、金成矿带中西段。成矿受古生代中亚造山与中生代火山岩浆活动双重影响,成矿背景复杂。矿床的主要含矿围岩为早二叠世宝力高庙组的一套火山碎屑岩,与成矿关系密切的岩体为燕山期花岗斑岩。矿体主要赋存于花岗斑岩与地层接触带外带的断裂破碎蚀变带中。矿体受构造控制,呈NEE向(70°±)展布。矿体的矿化类型主要为细脉状和浸染状,局部呈团块状。成矿元素主要为Zn,伴生Pb和Ag;Cu局部形成单独的矿体。成矿整体受区域构造演化影响,经历了晚古生代火山活动(含矿建造沉积、形成)-中生代岩体侵位-矿化形成的过程。The Hen Maiwenduer Zn-Cu polymetallic deposit of East Ujimqin Banner is located in the middle-western part of the Da Hinggan Mrs., east Inner Mongolia Cu-Fe-Pb-Zn-Ag-Sn-Mo-Au metallogenic belt in later Paleozoic to Mesozoic Era. The mineralization was effected by the Paleozoic Central- Asia orogenic and Mesozoic volcano-magmatic activity with complex ore-forming background. The orebearing wall rock is a suit of pyroclastic igneous rocks of the Baoligaomiao group in early Permian. The main metallogenic rock body is granite porphyry in Yanshanian. The ore bodies mainly occur in the altered fracture belt of the outer contact zone between the granite porphyry and the stratum, and are controlled by the structures obviously. The direction of NEE （70° ± ） structures controlled the ore body trend, and the NNW （330°± ） structure was the main ore-bearing structure. The ore type mainly is vein with disseminated ore, and partially is massive （the massive sulfide）. The mineralization element is mainly Zn, associated with Pb and Ag, where the Cu partially forms the independent ore body. The formation of the deposit is effected by the evolution of regional tectonic, undergoing the process of the sedimentary formation in later Paleozoic Era, rock body emplacement and ore-bearing hydrothermal filling in Mesozoic Era.

关 键 词：狠麦温都尔 铜锌多金属矿床 内蒙古东乌旗 

分 类 号：P618.51[天文地球—矿床学]