摘要
运用电感耦合等离子体质谱(ICP-MS)、X射线衍射(XRD)和工业分析等方法,探究沁水煤田坪上矿区太原组8#煤的微量元素地球化学特征,进而分析煤中微量元素对成煤环境的指示意义。结果表明:坪上矿区8^(#)煤轻度富集Li,Sc,Ga,Zr,Hf,Pb,Th元素,且主要赋存在以高岭石为主的硅酸盐矿物中;稀土元素以LREE富集为主,Eu存在明显负异常。环境指示性元素反映出坪上矿区8#煤沉积环境为还原条件下的陆相淡水环境,成煤期间基本未受到大范围海水的影响。
Focuses on the study of the trace element Geochemical characteristics of No.8 coal from Taiyuan formation in Pingshang mine,Qinshui coalfield,and the inative significance of trace elements on coal-forming environment are discussed,using inductively coupled plasma mass spectrometer (ICP-MS),X-ray diffraction (XRD),optical microscopy.The results show that:Pingshang mining area No.8 coal elements including Li,Sc,Ga,Zr,Hf,Pb,Th are slightly enriched,and mainly occurrence in Silicite minerals mainly kaolinite;the rare earth element patterns indicate that the light rare earth element is en-riched and show a clear Eu negative anomaly.Environmental indicative elements reflect the sedimentation environment of Pingshang mining area No.8 coal is land phase fresh water environment under reducing conditions,and is not affected by large range of seawater.
作者
孙明晓
蔺敬妍
左贵彬
郭文牧
王志勇
田泽奇
肖林
SUN Mingxiao;LIN Jingyan;ZUO Guibin;GUO Wenmu;WANG Zhiyong;TIAN Zeqi;XIAO Lin(Department of Geoscience and Engineering,Hebei University of Engineering,Handan 056038,China;Key Laboratory of Resource Exploration Research of Hebei Province,Hebei University of Engineering,Handan 056038,China;Hebei Provincial Coal Integrated Exploitation and Utilization Collaborative Innovation Center,Handan 056038,China)
出处
《煤炭技术》
CAS
北大核心
2022年第12期107-110,共4页
Coal Technology
基金
河北省杰出青年科学基金项目(D2021402017)
河北省自然科学基金(D2021402036)。
关键词
煤
微量元素
稀土元素
沉积环境
coal
trace element
rare earth element
depositional environment
