摘要:
以辽宁抚顺地区煤系地层中产出的煤精为研究对象,采用常规的宝石学测试,XRD,ESEM,FTIR等分析方法,研究了样品的宝石学特征、微形貌特征和红外光谱特征。研究结果显示,煤精的主要组分为非晶态树脂体和腐殖质,其有机组分的微形貌呈不规则鳞片状。样品存在OH,CH2,CH3,C＝O,C—O,Si—O,C—H等官能团,分别在3390,2959,2930,2857cm-1处具有其特定的吸收谱带。煤精与煤的产出环境相似,但宝石学特征差异较大,推断前者的成玉机制主要是由于含有大量且具有胶结作用的树脂体和凝胶体充填了煤的蜂巢状孔洞中,使煤较疏松的结构发生了改变而形成。
关键词:
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煤精
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组分
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微形貌
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红外吸收光谱
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抚顺
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辽宁
Abstract:
The gemmological characteristics, microtopography and IR spectra of jet samples from coal measure strata in Fushun, Liaoning Province, are studied by using the conventional gemmological methods, XRD, ESEM and FTIR．The results show that the samples mainly consist of amorphous resinite and humus, where the microtopography of the organic constituent is irregular squamose groups．There are functional groups in the samples such as OH, CH2, CH3, C＝O, C－O, Si－O and C－H, which have specific spectra at 3390, 2959, 2930, 2857cm-1．The jet samples are more compact than the coal samples because the honeycomb-like apertures of coal are filled with a large number of resinite and gelatin for gelatination resulting in the changes of loose structure．
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