安徽省南陵县牛山金铜多金属矿地质特征与成因浅析  

Geological characteristics and genesis of Niushan gold copper polymetallic deposit in Nanling County,Anhui Province

作　　者：闻卫军 WEN Wei-jun(Anhui Chemical Engineering Geological Exploration Institute,Maanshan 243000,Anhui)

机构地区：[1]安徽省化工地质勘查总院,安徽马鞍山243000

出　　处：《世界有色金属》2022年第14期93-96,共4页World Nonferrous Metals

摘　　要：牛山金铜多金属矿位于安徽省南陵县繁南火山岩盆地南缘,金以自然金,铜以黄铜矿形式赋存于花岗闪长斑岩内接触带的网脉状石英细脉或似角砾岩中,为浅成热液充填型金铜矿床。本文在分析牛山金铜多金属矿床地质特征、矿体特征、物探特征的基础上,对矿床进行了成因探讨,总结了找矿标志,认为该矿床具有斑岩体顶部浅成热液型矿床的相关特征。研究结果对以后该地区同类矿床勘查具有一定借鉴作用。牛山矿区内矿化种类多,矿化分布广,含矿层位多。矿化种类有金、铜、铅、锌、银等,区内已发现初具规模的金铜矿化带2个,金矿化体(脉)多层。围岩蚀变多样,有绿泥石化、硅化、高岭土化、绢云母化、硫铁矿化等蚀变强烈,揭示区内成矿具多样性,显示本区有着光明的成矿远景,预测通过进一步工作有望找到中-大型金铜铅锌多金属矿床。Niushan gold copper polymetallic deposit is located in the southern margin of Fannan volcanic basin,Nanling County,Anhui Province.Gold occurs in the form of natural gold and copper in the form of chalcopyrite in the network vein quartz veinlets or breccia like rocks in the contact zone of granodiorite porphyry.It is an epithermal filling gold copper deposit.Based on the analysis of the geological characteristics,ore body characteristics and geophysical prospecting characteristics of Niushan gold copper polymetallic deposit,this paper discusses the genesis of the deposit,summarizes the prospecting criteria,and considers that the deposit has the relevant characteristics of a porphyry top epithermal deposit.The research results can be used for reference for the exploration of similar deposits in this area in the future.There are many types of mineralization,wide distribution of mineralization and many ore bearing horizons in the mining area.The types of mineralization include gold,copper,lead,zinc,silver,etc.two gold copper mineralized zones with initial scale and multiple gold mineralized bodies(veins)have been found in the area.There are various wall rock alterations,including chloritization,silicification,sericitization,pyritization and other strong alterations,which reveal the diversity of mineralization in the area and show that the area has a bright metallogenic prospect.It is predicted that medium to large Au Cu Pb Zn polymetallic deposits will be found through further work.

关 键 词：金铜多金属 火山岩盆地 热液充填型 接触带 

分 类 号：TD862[矿业工程—金属矿开采]