Metamorphism Trend in Some Mongolian Coals Revealed by Raman Spectroscopy
Raman scattering spectra of the representative samples from Mongolian low metamorphic coal deposits as of Sharyn-Gol, Baganuur, Nalaikh, Alagtolgoi and Dovt were measured. Total carbon content of these samples was measured by X-ray microanalysis method. An existence of graphite-like domains in vitri...
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| Published in | Физик сэтгүүл Vol. 19; no. 425; pp. 21 - 24 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
15.03.2022
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| Online Access | Get full text |
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| Summary: | Raman scattering spectra of the representative samples from Mongolian low metamorphic coal deposits as of Sharyn-Gol, Baganuur, Nalaikh, Alagtolgoi and Dovt were measured. Total carbon content of these samples was measured by X-ray microanalysis method. An existence of graphite-like domains in vitrinite of the low metamorphism coals has been revealed by the Raman measurements. A Raman amorphous A band at 1342-1364 cm-1 is less intense and broader than that of a graphitic G band at 1560-1580 cm-1 for all studied samples. The graphitic G band is found to be shifted to higher frequencies within 1560-1580 cm-1 with a decrease of coal maturity, while the Raman amorphousgraphitic band intensity ratio R=fA/fG is found to be increased. |
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| ISSN: | 2311-1097 2790-8321 |
| DOI: | 10.22353/physics.v19i425.371 |