【引用本文】 闵红, 刘倩, 张金阳, 等. X射线荧光光谱-X射线粉晶衍射-偏光显微镜分析12种产地铜精矿矿物学特征[J]. 岩矿测试, 2021, 40(1): 74-84. doi: 10.15898/j.cnki.11-2131/td.202004020038
MIN Hong , LIU Qian , ZHANG Jin-yang , et al. Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope[J]. Rock and Mineral Analysis, 2021, 40(1): 74-84. doi: 10.15898/j.cnki.11-2131/td.202004020038

X射线荧光光谱-X射线粉晶衍射-偏光显微镜分析12种产地铜精矿矿物学特征

1. 上海海关工业品与原材料检测技术中心, 上海 200135;

2. 东华大学化学化工与生物工程学院生态纺织教育部重点实验室, 上海 201620;

3. 中国地质大学(武汉)资源学院, 湖北 武汉 430074

收稿日期: 2020-04-02  修回日期: 2020-05-31 

基金项目: 国家重点研发计划项目(2018YFF0215400,2017YFF0108905)

作者简介: 闵红,高级工程师,从事矿产品检测及标准化研究。E-mail:minhong@customs.gov.cn。。

通信作者:

Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope

1. Technical Center for Industrial Product and Raw Material Inspection and Testing, Shanghai Customs, Shanghai 200135, China;

2. Chemical Engineering and Biotechnology, Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai 201620, China;

3. College of Resources, China University of Geosciences(Wuhan), Wuhan 430074, China

Corresponding author: LIU Shu , 从事矿产品检测及标准化研究。liu_shu@customs.gov.cn。

Received Date: 2020-04-02
Revised Date: 2020-05-31

摘要:我国是世界上最大的铜精矿进口国,研究不同产地铜精矿的矿物学特征,能支撑铜精矿原产地分析及固体废物属性鉴定。本文研究对象为来自8个国家12个矿区的进口铜精矿样品,采用X射线荧光光谱(XRF)、X射线粉晶衍射(XRD)以及偏光显微镜进行综合分析,探寻这些矿区铜精矿的元素组成、矿物组合特征,探讨不同成因类型铜精矿的矿物学差异。X射线荧光光谱分析表明铜精矿样品主要元素为Cu、Fe、S、O,普遍含有Zn、Si、Al、Mg、Ca、Pb;X射线粉晶衍射物相分析表明铜精矿样品主要物相为黄铜矿,其次常含有黄铁矿和闪锌矿等物相;偏光显微镜光片鉴定表明铜精矿样品金属矿物中黄铜矿的含量在88%~98%之间,观察到黄铜矿与闪锌矿、黄铁矿、磁黄铁矿共生,闪锌矿与斑铜矿、砷黝铜矿共生,黄铜矿、砷黝铜矿和斑铜矿共生等连生体矿相。结合铜精矿不同成矿类型分析表明,斑岩型、矽卡岩型、火山成因块状硫化型铜矿床样品中常见黄铜矿、黄铁矿、闪锌矿,并分别含有黑云母、草酸钙石、硫酸铅特征矿物;铁氧化物铜金矿床样品主要矿物为黄铜矿,常见磁黄铁矿、滑石特征矿物。通过本文采用的多种技术表征不同产地铜精矿样品元素含量、物相组成、矿相组成的差异,能够全面分析不同产地铜精矿样品的矿物学特征,对进口铜精矿的风险识别和管控具有重要意义。

关键词: 铜精矿, X射线粉晶衍射, X射线荧光光谱, 偏光显微镜, 矿物特征

Study on the Mineralogical Characteristics of 12 Copper Concentrates by X-ray Fluorescence Spectrometry, X-ray Powder Diffraction and Polarization Microscope

KEY WORDS: copper concentrates, X-ray powder crystal diffraction, X-ray fluorescence spectrometry, polarizing microscope, mineralogical characteristics

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X射线荧光光谱-X射线粉晶衍射-偏光显微镜分析12种产地铜精矿矿物学特征

闵红, 刘倩, 张金阳, 周海明, 严德天, 邢彦军, 李晨, 刘曙