山东招远界河金矿床矿化垂向变化特征研究  

Vertical Variation of the Mineralization in Jiehe Gold Deposit,Zhaoyuan City,Shandong Province

作　　者：黄良伟[1] 曹新志[2] 张旺生[3] 徐伯骏[2] 

机构地区：[1]中国地质大学研究生院,武汉430074 [2]中国地质大学资源学院,武汉430074 [3]中国地质大学地球科学学院,武汉430074

出　　处：《地质科技情报》2013年第2期84-90,共7页Geological Science and Technology Information

基　　金：山东招远界河矿业有限公司地质勘查项目"山东招远界河金矿区矿体定位规律及深部成矿预测研究"(2010026482)

摘　　要：界河金矿床作为胶东地区典型的蚀变岩型金矿床,目前通过坑道工程揭露已经探明其矿体垂深达800m左右。从矿区浅部向深部,其矿化呈现出一定的规律性变化:矿化类型呈现出浅部以蚀变岩型矿化为主、深部以裂隙脉型矿化为主的分带规律;矿体规模逐渐变小,矿化强度逐渐减弱,矿体产状也逐渐变缓。此外,矿物组分、矿石组构、围岩蚀变以及微量元素特征等从浅部向深部也均呈现出规律性的变化。结合区域内石英脉型和蚀变岩型金矿化的垂向分带特征,初步建立了胶东地区金矿化在垂向上的"三段式"分带模式:浅部以石英脉型矿化为主,中部以蚀变岩型矿化为主,深部则以裂隙脉型矿化为主。Jiehe gold deposit,a typical altered rock type gold deposit in eastern Shandong has been proved that the vertical depth of the orebody is about 800m by tunnel.In this mining area,the mineralization presents some regular change from the shallow mining area to the deep mining area.The mineralization type zonal regularity is that altered rock type mineralization occurs mainly in the shallow mining area while the fissure vein type mineralization occurs mainly in the deep mining area.Orebody scale becomes small gradually.Mineralization intensity decreases gradually and the occurrence of the orebodies becomes slow gradually.In addition,the mineral components,the ore fabric,wall rock alteration and the trace element also present regular change from shallow mining area to deep mining area.Combining the vertical zoning of quartz vein type with altered rock type,this paper establishes the three-segment zoning model of gold mineralization in vertical direction,eastern Shandong.Quartz vein type mineralization occurs mainly in the shallow mining area.Altered rock type mineralization occurs mainly in the middle mining area while the fissure vein type mineralization occurs mainly in the deep mining area.

关 键 词：矿化垂向变化特征 “三段式”分带模式 界河金矿床 山东 

分 类 号：P618.51[天文地球—矿床学]