安徽省金山煤矿晚二叠世树皮煤的地球化学特征

通过采用ICP-MS、XRF、CV-AAS、SCEPI、CP-AES和光学显微镜方法,研究了安徽省金山煤矿晚二叠世树皮煤的地球化学特征。分析结果显示,Li、B、Sc、Ti、V、Cr、Fe、Ga、Y、Zr、Mo、Hg、Pb、Th和U等元素在树皮煤中高度富集。逐级化学提取的结果表明:煤中的Li、Sc、Ti、Cr、Y、Zr和Th等元素主要存在于硅酸盐矿物中,然而,Be存在于有机物质中;黄铁矿则主要是S、Mo、Hg、和Pb的载体;Ga只存在于硅酸盐矿物中,而U和V在有机物和硅酸盐物质中都有富集。

Geochemistry of the barkinite liptobiolith (Late Permian) from the Jinshan Mine, Anhui Province

This paper discusses the geochemistry of the barkinite liptobiolith of the Late Permian age from the Jinshan Mine,Anhui Province.Samples were examined using inductively coupled plasma-mass spectroscopy,X-ray fluorescence,coldvapor atomic absorption spectrometry,sequential chemical extraction,scanning electron microscopy equipped with energy-dispersive X-ray and optical microscopy. The results indicate that the barkinite liptobiolith contains some elements in high concentrations.Elements including Li,B,Sc,Ti,V,Cr,Fe,Ga,Y,Zr,Mo, Hg,Th,and U in the coals are enriched in the barkinite liptobiolith.Results of sequential chemical extraction showed that Li,Sc,Ti,Cr,Y,Zr,and Th in the coal mainly occur as silicates,while Be and W are related to organic matter. Pyrite is the dominant source of S,Mo,Hg and Pb.Gallium only occurs in silicate,and U and V occur both in organic and silicate associations.