江南过渡带东段安徽吕山金矿床成矿地质条件研究  

Study on metallogenic geological conditions of the Lyushan gold deposit in the eastern section of the Jiangnan transitional zone

作　　者：刘辅舰 施文强[2] 朱文伟[2] LIU Fujian;SHI Wenqiang;ZHU Wenwei(Anhui Baijin Mining Co.,Ltd.,Wuhu,Anhui 241314,China;No.312 Unit,Bureau of Geology and Mineral Exploration of Anhui Province,Bengbu,Anhui 233040,China)

机构地区：[1]安徽佰金矿业有限公司,安徽芜湖241314 [2]安徽省地质矿产勘查局312地质队,安徽蚌埠233040

出　　处：《安徽地质》2023年第2期116-118,143,共4页Geology of Anhui

基　　金：安徽省公益性地质调查项目“安徽省稀有、稀散元素矿产远景调查”(编号:2016-g-2-16)资助。

摘　　要：吕山金矿是安徽省重要的具有微细粒浸染矿化特征的类卡林型金矿床。矿床位于江南过渡带内北贡背斜的北东端,矿体主要呈似层状赋存于奥陶系中下统硅化角砾岩带及层间破碎带中。矿石以角砾岩型为主,含金褐铁矿与硫化物浸染状分布于角砾间隙的胶结物中。高金背景值的地层、多期次构造活动、燕山期中酸性侵入体、屏蔽层及表生富集作用共同控制了矿床的形成。The Lyushan gold deposit is an important Carlin-like one with micro-and fine-grained disseminated mineralization in Anhui Province.The deposit is located in the northeastern end of the Beigong anticline within the Jiangnan transitional zone.The ore bodies are mainly stratified and occur in the middle and lower Ordovician silicified breccia belt and interbedded fracture zone.The ore is mainly breccia type,with gold-bearing limonite and sulfide disseminated in the cement between the angular fragments.The formation of the deposit is jointly controlled by the strata with high gold background,multi-stage tectonic activity,the Yanshanian intermediate and acid intrusion,shielding layer and supergene enrichment.

关 键 词：吕山金矿 类卡林型 奥陶系 成矿地质条件 

分 类 号：P597[天文地球—地球化学]