滇东北松梁铅锌矿床控矿断裂构造岩微量元素的R型因子分析及其地质意义  

R-FACTOR ANALYSIS AND ITS GEOLOGICAL SIGNIFICANCE OF TECTONITES IN ORE-CONTROLLING FAULT IN THE SONGLIANG LEAD-ZINC DEPOSIT,NORTHEAST YUNNAN,CHINA

作　　者：李波[1] 韩润生[1] 顾晓春 刁理品 张羽洋 

机构地区：[1]昆明理工大学国土资源工程学院有色地质调查中心西南地质调查所,云南昆明650093 [2]云南铜业集团公司,云南昆明650051 [3]贵州省有色地质矿产勘查局,贵州贵阳550003

出　　处：《矿物岩石》2009年第1期52-59,共8页Mineralogy and Petrology

基　　金：国家自然科学基金项目(40863002);教育部新世纪优秀人才支持计划项目(NCET-04-917);昆明理工大学学科建设项目(2008)

摘　　要：通过因子分析这种常用的多元统计方法来揭示元素之间、样品之间以及与地质作用之间的相互关系，了解其中蕴藏着丰富的成矿信息，为研究成矿物质来源和矿床成因提供依据。在研究滇东北巧家松梁铅锌矿床地质特征的基础，以其中Ⅰ号矿体的控矿断裂（F5断裂）内的构造岩为R型因子，得到4组元素组合因子并综合成矿地质条件因子进行分析，结果表明：该矿床严格受构造控制，碳酸盐化蚀变和铅、锌矿化发生在不同的成矿阶段；成矿流体并非完全来自地层，主要来源于深源流体；铅锌等成矿物质具有“多源性”，部分来自于地层（白云岩），部分来自于与基底岩石有联系的成矿流体。容矿断裂带内的构造岩裂隙发育，铅锌成矿流体有选择性地沿碎基多、破碎强烈的裂隙充填胶结成矿，矿床应该属赋存于碳酸盐岩中的热液型铅锌矿床。The Songliang lead-zinc deposit in the Sichuan-Yunnan-Guizhou lead-zinc mineralizaion district is controlled by fault strictly. F5 fault is the ore-controlling fault of No. Ⅰ ore-body and the fault rocks in the crushed zone contain abundant mineralization information. Factor analysis can reveal the relationships among variables, samples, material composition and geological processes,and provide evidence for classification of variables and genesis of deposit. STATISTICA software is used to analyze the geological characteristics of tectonites in F5 fault in the Songliang lead-zinc deposit. It is indicated that the source of ore-forming minerals of Zn and Pb are multi-source, which was mainly derived from deep hydrothermal fluid in association with basement strata and partly from wall rock （dolomite）. And the ore-forming fluid was mainly derived from deep source solution combined with minor stratum water. The fault rocks with conspicuous fissures are filled and cemented by ore-forming fluid, leading to the formation of ore bodies. The Songliang lead-zinc deposit belongs to a hydrothermal type of Pb-Zn deposit.

关 键 词：R型因子分析 构造岩 成矿流体 松梁铅锌矿床 滇东北 

分 类 号：P545[天文地球—构造地质学]