Controls on boron and germanium distribution in the low-sulfur Amos coal bed, Western Kentucky coalfield, USA
International Journal of Coal Geology
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Abstract
The Duckmantian-aged Amos coal bed is a thin (<51 cm) coal bed that occurs in lobate southwest-trending pods separated by thin sandstones in the Western Kentucky coalfield. The coal bed, which is comprised of up to two benches and a rider coal, is low in ash yield (<6%) and sulfur content (<1%). The coal tends to be thin (<40 cm), but it was heavily mined in the 1980s because it could be combusted as mined. Geochemical analysis of the Amos coal bed shows higher concentrations of B and Ge than other Western Kentucky coal beds. High total B concentrations as well as high B/Be, both considered to be indicators of marine environments, increase toward the top of the coal bed. Most of the B values for the Amos samples range from 66 to 103 ppm (whole coal basis) indicating deposition in a brackish environment. High Ge concentrations in coals have been considered to be a function of seam thickness and proximity to the top and bottom of the coal bed. Thin coals, such as the Amos, are dominated by the coal bed margins and, therefore, have a tendency to have relatively high Ge concentrations. In the case of the Amos coal bed, the lower bench has a higher Ge content, suggesting that the substrate was a more important source of Ge than the roof rock. ?? 2002 Elsevier Science B.V. All rights reserved.
Suggested Citation
Hower, J., Ruppert, L., and Williams, D., 2002, Controls on boron and germanium distribution in the low-sulfur Amos coal bed, Western Kentucky coalfield, USA: International Journal of Coal Geology, v. 53, no. 1, p. 27-42, https://doi.org/10.1016/S0166-5162(02)00151-9.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Controls on boron and germanium distribution in the low-sulfur Amos coal bed, Western Kentucky coalfield, USA |
| Series title | International Journal of Coal Geology |
| DOI | 10.1016/S0166-5162(02)00151-9 |
| Volume | 53 |
| Issue | 1 |
| Year Published | 2002 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | International Journal of Coal Geology |
| First page | 27 |
| Last page | 42 |