The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types
International Journal of Coal Geology
By: C.E. Barker, M. D. Lewan, and M. J. Pawlewicz
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Abstract
The vitrinite reflectance suppression literature shows that while bitumen impregnation of the vitrinite group is often invoked as a significant contributor to suppression, its existence is not often supported by petrological evidence. This study examines bitumen impregnation as a factor in vitrinite suppression by comparing the vitrinite reflectance of source rock and coal samples before and after solvent-extraction. Bitumen, often defined as organic matter soluble or extractable in certain organic solvents, should be removed by Soxhlet method solvent extraction using chloroform. Removing the extractable bitumen should restore the suppressed reflectance to its true higher value. However, the solvent extracted samples averaged 0.014% Rv less than that of the unextracted samples. We conclude from these results and from other published data that reflectance suppression by bitumen impregnation in the vitrinite maceral group, above the huminite stage of gelification, is seemingly a rare phenomenon and whose effect on suppressing vitrinite reflectance is typically negligible. ?? 2006.
Suggested Citation
Barker, C., Lewan, M.D., Pawlewicz, M., 2007, The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types: International Journal of Coal Geology, v. 70, no. 1-3 SPEC. ISS., p. 67-78, https://doi.org/10.1016/j.coal.2006.03.005.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types |
| Series title | International Journal of Coal Geology |
| DOI | 10.1016/j.coal.2006.03.005 |
| Volume | 70 |
| Issue | 1-3 SPEC. ISS. |
| Year Published | 2007 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | International Journal of Coal Geology |
| First page | 67 |
| Last page | 78 |