闽中丁家山铅锌多金属矿区闪锌矿中Fe、Cd、Mn元素赋存特征及其地质意义

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英文篇名：Modes of occurrence of Fe,Cd,Mn in sphalerite from the Dingjiashan lead-zinc ore district in central Fujian Province and their geological significance 作者：石得凤 ; 陈新跃 ; 刘建平 ; 黄敏 英文作者：SHI De-feng;CEHN Xin-yue;LIU Jian-ping;HUANG Min;School of Resource Environment and Safety Engineering,Hunan University of Science and Technology;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring of Ministry of Education,Central South University;Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation,Hunan University of Science and Technology; 关键词：闪锌矿 ; 微量元素 ; 类质同像替换 ; 成矿作用 ; 丁家山铅锌多金属矿 ; 闽中地区 英文关键词：shpalerite;;trace elements;;isomorphic substitution;;mineralization;;Dingjiashan Pb-Zn polymetallic deposit;;central Fujian Province 中文刊名：岩石矿物学杂志 英文刊名：Acta Petrologica et Mineralogica 机构：湖南科技大学资源环境与安全工程学院;中南大学有色金属成矿预测与地质环境监测教育部重点实验室;湖南科技大学页岩气资源利用湖南省重点实验室; 出版日期：2019-03-25 出版单位：岩石矿物学杂志 年：2019 期：02 基金：湖南省自然科学基金青年项目(2017JJ3071);; 国家自然科学基金面上项目(41372209)~~ 语种：中文; 页：88-98 页数：11 CN：11-1966/P ISSN：1000-6524 分类号：P618.2

摘要

闪锌矿内Fe、Cd、Mn等元素含量不但影响闪锌矿的晶胞参数,而且蕴藏着丰富的矿床成因信息。闽中梅仙矿田丁家山铅锌矿区存在磁铁矿型和磁黄铁矿型两类矿石。本文通过X射线原位衍射和电子探针分析分别对两类矿石中闪锌矿的晶胞参数和Zn、Fe、Cd、Mn元素含量进行了测试,结果表明,闪锌矿晶胞参数具有磁黄铁矿型矿石>磁铁矿型矿石>理论值的特征,引起晶胞参数差异的主要原因是闪锌矿内Fe、Mn元素的含量。此外,两类矿石闪锌矿内Fe元素含量差距悬殊,Zn、Fe、Cd元素之间的替代关系和替代强度差异明显,结合研究区地质特征,认为这两类矿石可能是两次不同成矿作用的产物。
        The values of Fe,Cd,Mn and other trace elements in sphalerite not only influence its cell parameters but also contain rich information concerning the genesis of the ore.There are two types of ore in the Dingjiashan PbZn ore district of the Meixian orefield in central Fujian Province: the magnetite-type and the pyrrhotite-type.In this paper,the cell parameters and values of Zn,Fe,Cd and Mn of sphalerite in two types of ore were tested by X-ray in situ and electron microprobe analysis.In terms of the cell parameters of sphalerite,the characteristics of pyrrhotite-type > magnetite-type > the theoretical value are mainly caused by different values of Fe and Mn in sphalerite.In addition,the gap of Fe average values in sphalerite in two types of ore is much larger,and the substitutional relation and intensity between Zn,Fe and Cd of sphalerite in two types of ore are completely different.Combined with the geological characteristics of the study area,the authors consider that these two types of ore may be products of two kinds of mineralization.

引文

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