曹泊,吴国强,王双美,秦云虎,陈磊,祁文强,朱士飞

• 1:江苏地质矿产设计研究院
• 2:中国煤炭地质总局煤系矿产资源重点实验室
• 3:中国煤炭地质总局
• 4:青海煤炭地质勘查院

摘要(Abstract)：

微量元素的地球化学特征研究对煤中有益元素开发利用以及有害元素的污染防治具有重要意义,同时也可以为盆地沉积环境研究提供信息。应用电感耦合等离子质谱(ICP-MS)分析了五彩煤矿5号煤和顶底板中微量元素含量,并结合煤岩煤质特征、工业分析以及常量元素含量,研究煤中微量元素的富集特征,并讨论了五彩煤矿5号煤的沉积环境。结果表明,五彩煤矿5号煤中微量元素含量普遍偏低,与世界煤中微量元素相比,五彩煤矿5号煤中Sc、Cr、Co、Ni、Cu、Sr、Nb、Cd、Hf、Ta、W和Th元素含量正常,其余微量元素含量相对亏损。5号煤中矿物主要包括高岭石、石英和金红石。北部的祁连造山带可能是这些矿物的主要来源。煤中Sr/Ba和Sr/Cu比值表明五彩煤矿5号煤形成于干旱气候条件,随着湖平面上升,盐度逐渐降低,从咸化湖水、半咸水转变为淡水。Cu/Zn和Ni/Co比值表明五彩煤矿5号煤主要形成于富氧环境。

关键词(KeyWords)： 5号煤;微量元素;富集特征;沉积环境;五彩煤矿

Abstract:

Keywords:

基金项目(Foundation): 中国煤炭地质总局科技创新项目(ZMKJ-2020-13-2,ZMKJ-2019-J21,ZMKJ-2019-B13)

作者(Author): 曹泊,吴国强,王双美,秦云虎,陈磊,祁文强,朱士飞

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