东升庙矿床成因和找矿研究  

Study on Genesis and Ore Prospecting of Dongshengmiao Deposit in Inner Mongolia

作　　者：张志斌[1,2] 李建华[1] 黄超义[2] 刘虹[1] 赵岩辉 

机构地区：[1]四川省核工业地质局二八一大队,四川西昌615000 [2]紫金矿业集团东北亚有限公司,长春130021

出　　处：《吉林大学学报（地球科学版）》2010年第4期791-800,共10页Journal of Jilin University：Earth Science Edition

基　　金：国家'973'计划项目(2006CB403500)

摘　　要：对内蒙古东升庙矿床的矿床地质、地球化学特征的研究显示,该矿床的富硫和富锌2种矿体在矿体形态、矿石的金属矿物组合、结构构造、围岩蚀变特征及稀土元素地球化学特征方面均显示明显的差异。矿床的成矿作用有2期:第一期为热水喷流-沉积作用,形成了富硫矿体;第二期为发生于区域变质和变形作用之后的低温热液改造成矿作用,形成了富锌矿体。该矿床含矿地层从上到下多层富硫矿体-碎屑岩-白云质大理岩的岩石组合及富硫矿体形成以后的热液活动是形成富锌矿体的必要条件。在该矿床及其外围的狼山—渣尔泰成矿带内,众多块状硫化物矿床原生矿体之下、或多金属沉积层之下,有可能找到改造型富铜、锌、铅矿体。According to study on geological and geochemical characteristics of Dongshengmiao polymetallic deposit, in Urad Back Banner of Inner Mongolia,it was shown that there are many differences between S-rich and Zn-rich ore bodies from ore-body shapes, ore mineral assemblages, ore textures and structures, wall rock alterations to REE distribution patterns. The metallogeny of this deposit can be distinguished into two stages： the first one is a sedimentary exhalative process which contributed to S-rich ore-bodies; the second one is a low-temperature hydrothermal reconstructed process after regional metamorphism and wall rock deformation, which contributed to Zn-rich ore bodies. There are two favorable factors for zinc-rich ore formation, i.e. lithological assemblage of ore hosting strata from multiple sulfur-rich layers, clasolites to dolomitic-marble from top to bottom and low-temperature hydrothermal activities after sulfur-rich ore precipitation. The more reconstructed Cu, Zn and Pb ore bodies may be found in the deep below ore bodies or polymetallic strata in the deposit or in the Langshan-Zhaertai ore belt.

关 键 词：内蒙东升庙多金属矿床 地质特征 矿床成因 热水喷流-沉积作用 深部找矿 

分 类 号：P612[天文地球—矿床学]