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首页> 外文会议>11th EMAS regional workshop on electron probe microanalysis of materials today : Practical aspects >ELECTRON MICROPROBE ANALYSIS OF REE IN EUDIALYTE GROUP MINERALS: CHALLENGES AND SOLUTIONS
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ELECTRON MICROPROBE ANALYSIS OF REE IN EUDIALYTE GROUP MINERALS: CHALLENGES AND SOLUTIONS

机译：铀钙钛矿物质中稀土元素的电子微探针分析：挑战和解决方案

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摘要

Alkaline complexes containing eudialyte group minerals (EGM) comprise one of the most promising sources for future rare earth element (REE) supply. Complex mineral chemistry and crystal structure of EGM pose particular challenges for resource analytics and ore characterisation. A combination of qualitative scanning electron microscope (SEM)-based image analysis and quantitative analytical methods like electron microprobe (EPMA) is required. For this purpose polished thick sections are first mapped by the mineral liberation analyzer (MLA) to effectively identify the ore-bearing minerals and mineral associations. Backscattered electron images (BSE images) indicate varying BSE contrast within the EGM crystals. In order to determine the assumed elemental variations, element distribution maps of main (e.g., Zr, Si, Al) and minor (e.g., Ce, Y) elements are obtained by EPMA. These maps illustrate variable and complex zonation patterns within the EGM crystals. Based on the element distribution maps, quantitative analyses are then performed with a field emission electron microprobe JEOL JXA 8530F.
机译：含有重氮电解质族矿物（EGM）的碱性络合物是未来稀土元素（REE）供应的最有希望的来源之一。 EGM的复杂矿物化学和晶体结构对资源分析和矿石表征提出了特殊挑战。需要结合基于定性扫描电子显微镜（SEM）的图像分析和定量分析方法（如电子微探针（EPMA））。为此，首先通过矿物释放分析仪（MLA）绘制抛光的厚截面图，以有效识别含矿矿物和矿物组合。背向散射电子图像（BSE图像）表明EGM晶体内BSE对比度发生了变化。为了确定假定的元素变化，通过EPMA获得主要（例如Zr，Si，Al）和次要（例如Ce，Y）元素的元素分布图。这些图说明了EGM晶体内的可变和复杂分区模式。根据元素分布图，然后使用场发射电子微探针JEOL JXA 8530F进行定量分析。

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  • 会议地点 Leoben(IT)
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    P. Atanasova; J. Krause; R. Moeckel; I. Osbahr; J. Gutzmer;

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    Helmholtz Institute Freiberg for Resource Technology Halsbruecker Strasse 34, DE-09599 Freiberg, Germany,TU Bergakademie Freiberg, Department of Mineralogy Brennhausgasse 14, DE-09596 Freiberg, Germany;

    Helmholtz Institute Freiberg for Resource Technology Halsbruecker Strasse 34, DE-09599 Freiberg, Germany;

    Helmholtz Institute Freiberg for Resource Technology Halsbruecker Strasse 34, DE-09599 Freiberg, Germany,TU Bergakademie Freiberg, Department of Mineralogy Brennhausgasse 14, DE-09596 Freiberg, Germany;

    TU Bergakademie Freiberg, Department of Mineralogy Brennhausgasse 14, DE-09596 Freiberg, Germany;

    Helmholtz Institute Freiberg for Resource Technology Halsbruecker Strasse 34, DE-09599 Freiberg, Germany,TU Bergakademie Freiberg, Department of Mineralogy Brennhausgasse 14, DE-09596 Freiberg, Germany;

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