广西龙头山金矿床多期次成矿及金银元素的分布特征  

Multistage ore-forming process and distributing characteristics of Au,Ag elements in the Longtoushan gold deposit,Guangxi

作　　者：杨国高[1] 朱文凤[2] 张芳[1] 

机构地区：[1]桂林矿产地质研究院,广西桂林541004 [2]桂林工学院有色金属材料与加工新技术教育部重点实验室,广西桂林541004

出　　处：《矿产与地质》2008年第5期437-440,共4页Mineral Resources and Geology

摘　　要：广西龙头山金矿床在沉积岩或岩浆岩中均普遍发育电气石化,不同的岩石均出现电气石化说明电气石是热液作用的产物;电气石化强烈的地段多发现金矿物说明电气石与金矿物的关系密切。硫化物的互相穿插和交代现象,说明矿床是经过多期次热液叠加的结果。金元素分布在硫化物中较脉石多,银元素在硫化物和脉石中没有太大的变化;金银以较均匀的点相间分布,未形成矿物固溶体相;在出现金矿物的地段,金、银的含量明显上升,铁、硫大大减少。Tourmalization occurred abroadly in sedimentary rocks and magmatic rocks of the Longtoushan gold deposit, which indicates that the tourmalines formed by hydrothermal fluids and where there was intense tourmalinization, there are gold minerals, which reflects a close relationship between both of them. The interpenetration and replacement of sulfide indicate that the Longtoushan deposit formed by overlapping multistage hydrothermal fluids. Gold distributes in sulfide a little bit more than in gangues but silver＇s distribution doesn＇t have many differences. Gold and silver interphasely distributed as homogeneous particles with no solid solution formed. Gold and silver content increases obviously while that of iron and sulfur decreases sharply in the area where gold minerals occurred.

关 键 词：金矿床 多期次成矿 金银元素分布 次火山岩型金矿床 龙头山 广西 

分 类 号：P618.51[天文地球—矿床学] P578.11[天文地球—地质学]