Determination of Fe and Zn contents and distributions in natural sphalerite/marmatite by various analysis methods  

天然闪锌矿/铁闪锌矿中铁和锌含量及分布的多方法确定

作　　者：Hao LAI Jiu-shuai DENG Zi-long LIU Shu-ming WEN Ling-yun HUANG 赖浩;邓久帅;刘子龙;文书明;黄凌云(昆明理工大学国土资源工程学院复杂有色金属资源清洁利用国家重点实验室,昆明650093;中国矿业大学(北京)化学与环境工程学院,北京100083;西藏华泰龙矿业开发有限公司,拉萨850200)

机构地区：[1]State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China [2]School of Chemical&Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China [3]Tibet Huatailong Mining Development Co.,Ltd.,Lhasa 850200,China

出　　处：《Transactions of Nonferrous Metals Society of China》2020年第5期1364-1374,共11页中国有色金属学报（英文版）

基　　金：Projects(51764022,51404119)supported by the National Natural Science Foundation of China;Project(161046)supported by Fok Ying Tong Education Foundation,China;Project(2018M632810)supported by China Postdoctoral Science Foundation。

摘　　要：The contents of Fe and Zn in natural sphalerite samples were determined by chemical titration and spectroscopic techniques(portable X-ray fluorescence(P-XRF) spectrometry, electron probe microanalysis with energy dispersive spectroscopy(EPMA-EDS), electron probe microanalysis with wavelength dispersive spectroscopy(EPMA-WDS), and time-of-flight secondary ion mass spectrometry(To F-SIMS)). Besides, the distribution of Fe and Zn in sphalerite samples was analyzed by imaging EPMA-WDS and imaging To F-SIMS. The results show that Fe and Zn contents determined by each spectroscopic technique have good linearity with those determined by chemical titration(R^2>0.77), and the R^2 values of Fe are generally greater than those of Zn. The imaging analysis results revealed that Fe and Zn are not uniformly distributed in the sphalerite.采用化学滴定和光谱技术(便携式X射线荧光光谱(P-XRF)、电子探针能量色散光谱(EPMA-EDS)、电子探针波长色散光谱(EPMA-WDS)和飞行时间二次离子质谱(To F-SIMS))测定天然闪锌矿样品中Fe和Zn的含量。此外,利用EPMA-WDS成像和To F-SIMS成像分析闪锌矿样品中Fe和Zn的分布。结果表明,各光谱法测定的Fe和Zn含量与化学滴定法测定的Fe和Zn含量具有良好的线性关系(R^2>0.77),并且总体上Fe的R^2值大于Zn的R^2值。成像分析结果表明,Fe和Zn在闪锌矿中分布不均匀。

关 键 词：SPHALERITE MARMATITE FE Zn analysis methods imaging 

分 类 号：P575[天文地球—矿物学] O657[天文地球—地质学]