内蒙古自治区田家沟铅锌多金属矿地质、地球化学特征及矿化富集规律  

Study on geological-geochemical characteristic and mineralization enrichment regularity of Tianjiagou lead-zinc deposit, Inner Mongolia Autonomous Region

作　　者：黎伟[1] 李明飞[1] 刘亚彬[1] 王洪志[1] 

机构地区：[1]核工业二四三大队,内蒙古赤峰024000

出　　处：《吉林地质》2016年第2期42-48,共7页Jilin Geology

摘　　要：田家沟矿区位于华北地台北缘中段,火山、构造活动强烈,具较好的成矿前景。本文重点针对田家沟铅锌矿矿床地质特征及土壤、钻孔原生晕地球化学特征进行了系统分析研究,结果显示铅锌矿体主要赋存上侏罗统满克头鄂博组以中酸性火山碎屑岩为主的地层中,受到NW向张性断裂控制,矿体呈脉状、透镜状、豆荚状,成矿与流纹斑岩、安山玢岩等次火山岩密切相关。钻孔原生晕显示主成矿元素、围岩蚀变具有较好的分带性。NW向主断裂与其它配套构造交汇及其附近部位矿化易富集,并初步认为该矿床成因为晚期次火山热液交代充填的脉状矿床。Tianjiagou mining area is located in the central section of the North margin of North China Platform, which has good metallogenic prospects on account of strong volcanic and tectonic activity. In this paper, focusing on analyzing systematically desposit geological characteristics, soil and drilling primary halos geochemical characteristics of Tianjiagou Pb-Zn deposit. The result show that the Pb-Zn ore bodies mainly occur in the acidic pyroclastic rocks of the Upper Jurassic Manketou＇e bo Formation, which are vein, lense and podiform dominated by NW faulting, the mineralization closely related with subvolcanics, such as porphyry rhyolite, and andesitic etc. The main ore-forming elements of bored primary halo and wall rock alteration have good zonation. The mineralization enriched easily in the intersection of NW fault and other supporting construction and their nearby area. It is considered initially that the deposit is the vein deposit formed by late sub volcanic Metasomatism and filling.

关 键 词：矿床地质 地球化学特征 次火山热液 矿化富集规律 田家沟铅锌矿 

分 类 号：P618.42[天文地球—矿床学] P618.43[天文地球—地质学]