Enrichment characteristics of associated elements of Late Permian coal and coal ash from Pu'an and Qinglong coal mining area in Guizhou Province
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摘要: 运用电感耦合等离子体质谱仪（ICP-MS）和电感耦合等离子体发射光谱仪（ICP-AES）分别对普安-晴隆矿区晚二叠世C17、C19、C22和C26号煤层中8个煤样和7个煤灰样进行微量元素含量的测试分析。结果表明，煤及煤灰中明显富集Li、Sc、V、Cr、Co、Ge、As、Nb、Mo、W、U等元素，且各元素在煤灰中更加富集，Nb、Zr、V、Ga和U等伴生金属元素的含量基本达到或超过了对应元素的边界品位或最低工业品位。煤中伴生元素的富集成因研究表明，V、Cr、Co、Nb和Zr等元素的富集主要受物源区峨眉山玄武岩风化碎屑物质供给的控制；U、S、Mo等元素的有限富集与海水作用有关；而受成煤期同沉积火山灰沉降的影响，煤中Li、Nb、Zr、Mo和U等微量元素表现出一致富集的特点；成煤期后的低温热液作用，使得各煤层，尤其是底部煤层（C19、C26）明显富集As、Mo、U和W等元素。综合分析认为，成煤期同沉积的火山灰沉降和成煤期后的低温热液作用是普安-晴隆矿区晚二叠世煤中伴生元素异常富集的主控地质因素。Abstract: ICP-MS and ICP-AES were applied to study the geochemical characteristics of trace element content of eight representative coal samples and seven coal ash samples from Late Permian coal seams C17, C19, C22 and C26 in Pu'an and Qinglong coal mining areas. The results showed that the elements such as Li, Sc, V, Cr, Co, Ge, As, Nb, Mo, W and U are enriched obviously in coal and coal ash. Compared with the concentrations of elements from coal samples, the elements from coal ash are further enriched, the content of Nb, Zr, V and U reached or exceeded the cutoff grade or the lowest industrial grade. Evidence suggests that enrichment of V, Co,Ni and Cr can be attributed to the weathered detrital materials of Emeishan basalt, at the same time, the sedimentary environment is also one of the factors that could influence the enrichment of some elements. For example, U, S and Mo are inclined to be enriched when the action of sea water became strong. Some elements like Li, Nb, Zr, Mo and U are consistently enriched and affected by the sedimentation of synsedimentary volcanic ash. Furthermore, the low temperature hydrothermal activity after coal-forming peroid made coal seams, especially the bottom coal seams(C19, C26) obviously enriched in specific elements such as As, Mo, U and W. It is concluded that the sed imentation of synsedimentary volcanic ash and the low temperature hydrothermal activity were together the main control factors effecting the enrichment of the associated elements in the Late Permian coal through comprehensive analysis.
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[1] 代世峰,任徳贻,周义平,等. 煤型稀有金属矿床:成因类型、赋存状态和利用评价[J]. 煤炭学报,2014,39(8):1707-1715. DAI Shifeng,REN Deyi,ZHOU Yiping,et al. Coal-hosted rare metal deposits:Genetic types,modes of occurrence,and utilization evaluation[J]. Journal of China Coal Society,2014,39(8):1707-1715.
[2] 任德贻,赵峰华,代世峰,等. 煤的微量元素地球化学[M]. 北京:科学出版社,2006. [3] 李婷,桑树勋,王文峰,等. 煤灰中金的地球化学研究进展[J]. 矿物岩石地球化学通报,2014,33(2):247-251. LI Ting,SANG Shuxun,WANG Wenfeng,et al. Advance in geochemical research on Au in coal ash[J]. Bulletin of Mineralogy,Petrology,Geochemistry,2014,33(2):247-251.
[4] VALKOVIE V. Trace elements in coal[M]. BoeaRaton:CRC Press,1983.
[5] DAI Shifeng,REN Deyi,TANG Yuegang,et al. Concen-tration and distribution of elements in Late Permian coals from western Guizhou Province,China[J]. International Journal of Coal Geology,2005,61(1/2):119-137.
[6] 唐修义,黄文辉. 中国煤中微量元素[M]. 北京:商务印书馆,2004. [7] 黎彤. 化学元素的地球丰度[J]. 地球化学,1976,5(3):167-174. LI Tong. Terrestrial abundance of chemical elements[J]. Geochimica,1976,5(3):167-174.
[8] 崔光来,全书进,吴朝东. 焉耆盆地侏罗系煤中微量元素地球化学特征及意义[J]. 北京大学学报(自然科学版),2004,40(4):594-600. CUI Guanglai,QUAN Shujin,WU Chaodong. Jurassic coal in Yanqi basin(Xinjiang,China):Geochemical characteristics of trace elements and their implications[J]. Acta Scientiarum Naturalium Universitatis Pekinensis,2004,40(4):594-600.
[9] 刘玲. 黔西县晚二叠世主采煤层煤的地球化学特征初步研究[D]. 贵阳:贵州大学,2009. [10] VAN DER FLIER E,FYFE W S. Uranium-thorium sys-tematic of two Canadian coals[J]. International Journal of Coal Geology,1985,4(4):335-353.
[11] DAI Shifeng,REN Deyi,Hou Xiaoqiang,et al. Geochemical and mineralogical anomalies of the Late Permian coal in the Zhijin coalfield of Southwest China and their volcanic origin[J]. International Journal of Coal Geology,2003,55(2/3/4):117-138.
[12] 李大华,唐跃刚. 黔西晴隆矿区晚二叠世煤地球化学变异的地质成因[J]. 地质论评,2005,51(2):163-168. LI Dahua,TANG Yuegang. Geological genesis of coal geo-chemical anomalies of the Late Permian coals from the Qinglong coalfield in western Guizhou,China[J]. Geological Review,2005,51(2):163-168.
[13] ZHOU Yiping,BOHOR B F,REN Youliang. Trace element geochemistry of altered volcanic ash layers(tonsteins) in Late Permian coal-bearing formations of eastern Yunnan and western Guizhou Province,China[J]. International Journal of Coal Geology,2000,44(3/4):305-324.
[14] DAI Shifeng,WANG Xibo,ZHOU Yiping,et al. Chemical and mineralogical compositions of silicic,mafic,and alkali tonsteins in the Late Permian coals from the Songzao coalfield,Chongqing,Southwest China[J]. Chemical Geology,2011,282(1/2):29-44.
[15] DAI Shifeng,ZHOU Yiping,ZHANG Mingquan,et al. A new type of Nb(Ta)-Zr(Hf)-REE-Ga polymetallic deposit in the Late Permian coal-bearing strata,eastern Yunnan,Southwestern China:Possible economic significance and genetic implications[J]. International Journal of Coal Geology,2010,83(1):55-63.
[16] 徐彬彬,何明德. 贵州煤田地质[M]. 北京:中国矿业大学出版社,2003:199-200. [17] YANG Ruidong,LIU Ling,WEI Huairui. Geochemical characteristics of Guizhou Permian coal measure strata and analysis of control factors[J]. Journal of Coal Science and Engineering,2011,17(1):55-68.
[18] 陶振鹏,杨瑞东,程伟,等. 贵州贞丰龙头山煤矿晚三叠世煤的元素地球化学特征及富集成因分析[J]. 中国煤炭,2015,41(4):45-50. TAO Zhenpeng,YANG Ruidong,CHENG Wei,et al. Analysis on element geochemical characteristics and enrichment causes of the Late Triassic coal in Longtoushan coal mine in Zhenfeng County in Guizhou Province[J]. China Coal,2015,41(4):45-50.
[19] 聂爱国,陈松. 峨眉地幔热柱活动与贵州西部二叠系煤的形成环境研究[J]. 贵州大学学报(自然科学版),2011,28(1):39-43. NIE Aiguo,CHEN Song. A study between Emei Mantle plume activity and environment forming coal of Permian in western Guizhou Province[J]. Journal of Guizhou University(Nature Science Edition),2011,28(1):39-43.
[20] 黄志勇. 黔西南高砷煤与卡林型金矿成因关系研究[D]. 贵阳:贵州大学,2008. -
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