多元统计分析在普朗斑岩型铜矿床中的应用  

Application of multivariate statistical analysis in Pulang porphyry copper deposit

作　　者：张娜[1] 刘学龙[2] 邓明国[2] 

机构地区：[1]昆明理工大学城市学院,昆明650051 [2]昆明理工大学国土资源工程学院,昆明650093

出　　处：《矿产与地质》2015年第1期119-124,共6页Mineral Resources and Geology

基　　金：云南省香格里县格咱地区铜多金属矿整装勘查区关键基础地质研究项目(12120114013701);中国博士后科学基金项目(2014M552547XB);昆明理工大学省级人培项目(KKSY201421042)共同资助

摘　　要：普朗斑岩型铜矿是云南格咱岛弧成矿带中印支期斑岩型铜矿床的典型代表。本文应用聚类分析、因子分析方法对普朗斑岩型铜矿成矿岩体中微量元素进行了分析和科学分类。根据普朗复式斑(玢)岩体的地质条件和微量元素地球化学特征,从理论角度定性分析和定量分析均确定了普朗复式岩体存在明显的Cu-Au-Ag矿化异常,主成矿元素Cu与Au、Ag、Mo、W等具有较好的相关性,且局部存在中―低温的Pb、Zn矿化异常组合。矿床的形成与印支期中酸性斑(玢)岩体的侵入有密切的联系,成矿作用具多期多阶段性。Pulang porphyry copper deposit is a typical Indosinian porphyry copper deposit in Geza island arc metallogenic belt of Yunnan.This paper analyzed and categorized the trace elements in ore-forming rock body of Pulang porphyry copper deposit by applying cluster analysis and factor analysis.Based on the geological conditions of composite porphyry（porphyrite）rock bodies and geochemistry characteristics of trace elements,this paper confirmed obvious Cu-Au-Ag mineralization anomalies occurred in Pulang composite rock bodies through qualitative and quantitative analysis,and it also suggested a good correlation of the main metallogenetic element Cu with Au,Ag,Mo,and W,as well as low-intermediate Pb-Zn mineralization anomalies association occurred in parts.The formation of the deposit has close relationship with invasion of Indosinian intermediate acidic porphyry（porphyrite）rock bodies,and the mineralization is characterized by multi-phase and multi-stage.

关 键 词：斑岩型铜矿 微量元素 聚类分析 R型因子分析 普朗 云南 

分 类 号：P618.41[天文地球—矿床学]