陕西凤县地区九子沟铜矿的特征、成因及意义  

Characteristics,genesis and significance of the Jiuzigoucopper deposit in Fengxian County,Shaanxi Province

作　　者：代军治 李永勤 王设计 刘辰 原连肖 王瑞廷 王涛 

机构地区：[1]西北有色地质勘查局,陕西西安710054 [2]西北有色地质勘查局717总队,陕西宝鸡721015 [3]陕西省核工业地质调查院,陕西西安710054 [4]西北有色地质研究院,陕西西安710054

出　　处：《地质通报》2011年第11期1794-1801,共8页Geological Bulletin of China

基　　金："十一五"国家科技支撑计划课题(编号:2006BAB01A11);"十二五"国家科技支撑计划课题(编号:2011BAB04B05-2);公益性行业科研专项(编号:201111007-3)

摘　　要：九子沟铜矿是凤县-太白铅锌多金属矿集区近年来发现的新矿床。矿化类型主要表现为硅质岩型、硅化灰岩型和石英-方解石脉型。矿体主要呈层状、似层状、透镜状与围岩整合产出,且多被后期顺层或切层含矿石英-方解石脉交代,形成富矿体。综合地质特征和地球化学特征,认为该矿床成因类型为喷流沉积-改造型铜矿。九子沟等铜矿床(点)与区域上的铅锌矿床构成了热水喷流沉积矿床的元素分带模式。这一发现,指示今后该地区可在热水喷流沉积矿床元素分带模式的基础上,结合区带内背斜控矿的地质特征开展找矿工作。Jiuzigou deposit is a newly discovered copper deposit in the Fengxian-Taibai Pb-Zn polymetallic ore district.Siliceous, silicified limestone and quartz-calcite are the main mineralization types.Ore bodies in layered,stratoid and lenticular forms are in conformable contact with the host rocks and cut by late quartz-calcite veins,forming rich ore bodies.Combining geological features with geochemical characteristics,the authors hold that this ore deposit is of the SEDEX-rebuilt type.The Jiuzigou deposit and other ore deposits in this region constitute a typical SEDEX element zoning model.This discovery,in combination with other structural characteristics, will play a significant role in guiding the future exploration in this area.

关 键 词：九子沟铜矿床 矿化类型 矿床成因 喷流沉积-改造型 陕西凤县地区 

分 类 号：P618.41[天文地球—矿床学]