安徽宁国银峰—尤川地区银锌矿床地质特征探究  

Geological Characteristics of Silver-Zinc Deposit in Yinfeng-Youchuan Area,Ningguo City,Anhui Province

作　　者：张吉生[1] 庾江华[1] 李凯[1] 田真 ZHANG Jisheng;YU Jianghua;LI Kai;TIAN Zhen(No.322 Geological Team,Bureau of Geology Mineral Exploration of Anhui Province)

机构地区：[1]安徽省地质矿产勘查局322地质队

出　　处：《现代矿业》2023年第3期22-26,共5页Modern Mining

摘　　要：为了查明银峰—尤川地区铅锌银多金属矿体分布、空间形态、品位,采用1∶1万地质填图、钻探工程及采样测试分析方法对研究区地质特征进行深入研究。研究结果表明:在银山脚复向斜次级背斜核部发现1处小型银锌矿床,该矿床形成于硅化带内或边部,埋藏浅,赋存于寒武系杨柳岗组,而杨柳岗组既是成矿母岩,又是矿体围岩;矿体是以锌为主的拱形脉状-凸镜状矿体,厚1~12m;铅锌银是主要金属,Pb平均品位0.85%,Zn平均品位3.04%,Ag平均品位212.16 g/t。In order to find out the distribution,spatial morphology and grade of the lead-zinc-silver polymetallic ore bodies in the Yinfeng-Youchuan area,the geological characteristics of the study area are studied by 1∶10,000 geological mapping,drilling engineering and sampling test analysis.The results show that a small silver-zinc deposit was found in the core of the secondary anticline of Yinshanjiao.The deposit was formed in or on the side of the silicified zone,and was shallowly buried.It exists in the Yangliugang formation of the Cambrian system,which is not only the mother rock of mineralization,but also the sur⁃rounding rock of orebody.The orebody is mainly zinc arched vein-convex mirror orebody with thickness of 1~12 m.Lead-zinc-silver is the main metal,and the average grade of Pb is 0.85%,Zn 3.04%and Ag 212.16 g/t.

关 键 词：银锌矿 原生晕异常 地质特征 地质填图 

分 类 号：P618.52[天文地球—矿床学] P618.43[天文地球—地质学]