张子傲,刘恩涛,许家省,严德天,刘曙,闵红

• 1:中国地质大学(武汉)海洋学院
• 2:中国地质大学(武汉)资源学院
• 3:上海海关工业品与原材料检测技术中心

摘要(Abstract)：

我国是铁矿石资源进口大国，通过分析不同产地进口铁矿石的矿物学特征，可以为铁矿石原产地分析及固体废物属性鉴定提供参考依据。以11个常见进口国一级铁矿石样品为研究对象，综合运用偏光显微镜、X射线荧光光谱法(XRF)以及黄铁矿、磁铁矿LA-ICP-MS微量元素分析等方法，查明了各国铁矿石的元素组成和矿物组合特征，探究了不同产地铁矿石形成的地质环境。X射线荧光光谱分析表明铁矿石样品主要元素为Fe, O,其次为Si, Ca, Al, Mn, Tb, Ti, Mg, P,S,不同国别铁矿石元素含量存在差异。偏光显微镜光片鉴定表明铁矿石样品不仅矿物类型上存在差异，而且在副矿物种类和含量、结构构造等方面存在差别，这些差异性特征可以作为铁矿石产地判别的依据。磁铁矿微区原位微量元素的成因类型判别结果显示，澳大利亚磁铁矿主要为BIF建造型，而缅甸、老挝为矽卡岩型。采用多种技术表征不同产地铁矿石样品的矿物组成、元素含量、矿相组成、矿物形成环境的差异性，揭示了不同产地铁矿石样品的矿物学特征，对进口铁矿石质量的识别、管控和产地溯源具有重要意义。

关键词(KeyWords)： 铁矿石;矿相分析;微量元素;LA-ICP-MS;矿床成因类型

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2018YFF0215402)

作者(Author): 张子傲,刘恩涛,许家省,严德天,刘曙,闵红

DOI: 10.19509/j.cnki.dzkq.2021.0094

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