云南昭通毛坪铅锌矿床成矿物质来源的新证据——NE向断裂构造岩微量元素R型因子分析结果  

NEW EVIDENCES OF ORIGIN OF METALLOGENIC MATERIALS IN THE MAOPING PB-ZN ORE DEPOSIT, ZHAOTONG, YUNNAN : R-FACTOR ANALYSIS RESULTS OF TRACE ELEMENTS IN NE-EXTENDING FRACTURAL TECTONITES

作　　者：邹海俊[1] 韩润生[1] 胡彬[1] 刘鸿 

机构地区：[1]昆明理工大学国土资源工程学院地球科学系,昆明650093 [2]贵州省睛隆锑矿,贵州561409

出　　处：《地质与勘探》2004年第5期43-48,共6页Geology and Exploration

基　　金：云南省跨世纪学术与技术带头人培养基金(省自然科学基金)(编号:99D0003G);昭通毛坪铅锌矿校企合作项目(编号:2001-01)联合资助。

摘　　要：R型因子分析可通过研究地质变量在时间和空间上的组合、变化和分布特征而形成地质概念,并恢复地质过程,指示物质来源。在研究云南昭通毛坪铅锌矿床地质特征的基础上,分别对矿区910和846中段Ⅱ、Ⅲ号矿带NE向断裂构造岩微量元素进行了R型因子分析,提出成矿物质来源的新证据。在时间上,指示了主要成矿期次为沉积成岩期和热液成矿期,热液期又划分为黄铁矿—闪锌矿阶段、闪锌矿阶段、闪锌矿—方铅矿阶段和碳酸盐—黄铁矿矿化4个成矿阶段;在成矿物质来源上,锌来源于赋矿地层(C1b和C2w)和外来成矿流体,铅主要由外来成矿流体带入。The R-factor analysis method can be used to produce geological concepts, restore geological process and predict origin of ore-forming materials by studying the association, variation and characteristics of distribution of geological variables in space and time. On the base of study on the geological characteristics of the Maoping Pb-Zn ore deposit, Zhaotong, Yunnan province, the R-factor analysis has been applied to discuss trace elements in fractural tectonites in the II, III ore-zones of levels 910 and 846. New evidences have been provided for the origin of metallogenic materials. In the sense of time, the ore-forming periods can be divided into sedimentary and hydrothermal stages, and hydrothermal stage can also be divided into pyrite-sphalerite phase, sphalerite phase, galena-sphalerite phase and the carbonate-pyrite phase. In the source of ore-forming material, Zn came from local strata (C1b and C2w) and the external ore-forming fluids, Pb was mostly brought in by the external ore-forming fluids.

关 键 词：R型因子分析 断裂构造岩 成矿物质来源 毛坪铅锌矿 云南 

分 类 号：P628[天文地球—地质矿产勘探]