Micrinite in Southern Hemisphere sub-bituminous and bituminous coals : redefined as fine grained kaolinite
Data(s) |
01/08/1993
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Resumo |
A range of complementary analytical techniques including SEM/EDS, TEM/EDS and conventional optical microscopy has been rigorously applied to precisely defined areas of micrinite in polished coal samples from Australia and New Zealand. Elemental analyses of micrinite regions showed a high abundance of Al, Si and O and high resolution images of micrinite revealed a grain size < 1μm. Electron diffraction and elemental analyses from individual grains within the optically and electron-optically correlated micrinite regions are consistent with the occurence of fine-grained kaolinite. The optical properties of "dark clay" and "micrinite" (i.e. fine-grained kaolinite) can be understood in terms of the diffuse scattering of visible light from the surfaces of materials with different grain sizes in single-phase or multi-phase mixtures. |
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Publicador |
Pergamon |
Relação |
DOI:10.1016/0146-6380(93)90066-K Faraj, Basim S. M. & Mackinnon, Ian D. R. (1993) Micrinite in Southern Hemisphere sub-bituminous and bituminous coals : redefined as fine grained kaolinite. Organic Geochemistry, 20(6), pp. 823-841. |
Fonte |
Institute for Future Environments |
Palavras-Chave | #040204 Organic Geochemistry #040309 Petroleum and Coal Geology #bituminous coal #clay minerals #coal #exinite #grain size #inertinite #kaolinite #macerals #micrinite #optical properties #organic residues #reflectance #sedimentary rocks #SEM data #sheet silicates #Southern Hemisphere #subbituminous coal #TEM data #vitrinite |
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Journal Article |