Variation in pyrite size, form, and microlithotype association in the springfield (no. 9) and herrin (no. 11) coals, Western Kentucky |
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| Authors: | Kathleen Adams Frankie James C. Hower |
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| Affiliation: | 1. Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK;2. Store Norske AS, PO Box 613, NO-9171 Longyearbyen, Norway;3. British Geological Survey, Nicker Hill, Keyworth, Nottingham NG12 5GG, UK;4. Department of Mineralogy, Natural History Museum, Cromwell Road, London SW7 5BD, UK;5. GeoArktis As, Rosestien 3, N-4022 Stavanger, Norway |
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| Abstract: | Channel samples of the Springfield (No. 9) and Herrin (No. 11) (Pennsylvanian, Desmoinesian/Westphalian D) coals were acquired in three mines each in the Western Kentucky coal field. Pyrite was characterized petrographically in terms of its size, form, and microlithotype association. Within each coal seam significant variations in the amount of pyrite of certain forms occurred between the sites. Pyritic sulfur as determined chemically did not exhibit significant variation between the seams or between the sites. The variation in dendritic pyrite in vitrite plus clarite between seams and between sites was highly significant and the variation in framboidal pyrite in vitrite plus clarite between sites was also highly significant. |
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