Anomalous Concentrations of Rare Metal Elements, Rare-scattered(Dispersed) Elements and Rare Earth Elements in the Coal from Iqe Coalfield, Qinghai Province, China

查看全文 作　　者：SUN [1]Yuzhuang;ZHAO [2]Cunliang;LI [2]Yanheng;WANG [1]Jinxi

机构地区：[1]Key Laboratory of Resource Exploration Research of Hebei Province, Hebei University of Engineering;[2]Hebei Collaborative Innovation Center of Coal Exploitation, Hebei University of Engineering

出　　处：《Acta Geologica Sinica(English Edition)》索引2015年第89卷第1期,共13页

基　　金：supported by the China geological survey project'Qaidam Basin Oil and Gas Resources Evaluation'(Nr:([2013]4-(3),001-008);National Natural Science Foundation of China(No.41330317) 摘　　要：Total of 23 bench samples were taken from the No. 7 Coal of Iqe Coalfield, Qinghai Province, China, following Chinese Standard Method GB/T 482-2008(2008). These samples were analyzed by powder X-ray diffraction(XRD), inductively coupled plasma mass spectrometry(ICPMS) and X-ray fluorescence(XRF). The results indicate that the No. 7 Coal belongs to a low rank(Ro,ran =0.659%) and high-ash coal(40.54%). Compared to common Chinese and world low-rank coals, the Iqe coal contains anomalous concentrations of rare metal elements, rare-scattered(dispersed) elements and rare earth elements. The highest contents of Rb, Cs, Ga and REY reach to 180, 26, 37, and 397 ppm, respectively. Their average contents of these elements are 10.9, 15, 4.8 and 3.5 times higher than those of world coals, respectively. Minerals in the coal include kaolinite, quartz, muscovite, siderite, and traces of rutile, and brookite. Kaolinite could be main host minerals of Rb, Cs, Ga and REY. The anomalous rare element Rb and Cs accumulation in the Iqe coal is related to both organic and inorganic matter. The REY concentrations may be related to circulation of thermal solutions, contained or sorbed by clayey particles, and organic matter as well. 关键词：稀有金属元素稀土元素青海省煤田中国浓度分散异常

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Anomalous Concentrations of Rare Metal Elements, Rare-scattered(Dispersed) Elements and Rare Earth Elements in the Coal from Iqe Coalfield, Qinghai Province, China

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