大姚铜矿白垩系马头山组砂岩类的地球化学特征及成岩成矿背景分析  

Geochemical features of sandstones in Matoushan formation of Dayao copper mine and the diagenesis and mineralization background

作　　者：甘凤伟[1] 方维萱[2] 王训练[1] 韩润生[3] 

机构地区：[1]中国地质大学,北京100083 [2]有色金属矿产地质调查中心北京地质调查所,北京100012 [3]昆明理工大学,昆明650093

出　　处：《矿产与地质》2006年第4期340-347,共8页Mineral Resources and Geology

基　　金：云南省大姚县六苴铜矿小河-石门坎矿段解体资源勘察;项目编号: 200453001

摘　　要：分析大姚铜矿砂岩类的常量元素,反映其成岩成矿的构造背景,砂岩铜矿中碎屑岩的常量元素特征主要受物源区控制。大姚砂岩铜矿成矿受氧化-还原环境控制,分析大姚六苴矿床岩石和矿石样品的F e2+/F e3+值与铜元素含量之间的关系,探讨砂岩铜矿的氧化-还原环境特征,从而建立大姚砂岩铜矿的地球化学相。The major elements of clastic rocks in sandstone copper deposit are controlled by the tectonic setting of source area. Consequently, it is possible to discriminate the tectonic setting of ore-forming and rock-forming by studying major elements of sandstones in Dayao sandstone copper mine. Forming of Dayao sandstone copper deposit is controlled by redox environment. According to the analysis of the linear relation between ratio of Fe^2＋/Fe^3＋ and copper content which come from samples of rocks and ores in Liuju deposit of Dayao mine, features of redox environment were discussed, resulting in establishing the geochemical phases in sandstone copper deposit.

关 键 词：砂岩铜矿 成岩成矿 地球化学特征 常量元素 构造背景 地球化学相 大姚 云南 

分 类 号：P618.41[天文地球—矿床学] P611.22[天文地球—地质学]