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- W270215238 abstract "Seven coals (Upper Washington, Middle Washington, Lower Washington, Waynesburg, Sewickley, Middle Kittanning, and Upper Mercer) were sampled from the Texas Eastern pipeline in fayette and Somerset Counties, Pennsylvania. The mineralogy of the ash fractions of the coals was determined through LTA (low temperature ashing) of the samples and the ash was then analyzed with XRD. To make the XRD semi-quantitative, an Al internal standard was added to the ash. Each coal sample was found to contain quartz as a major ash mineral, with kaolinite as a minor mineral. Fe or Mn oxides were also found in each of the coal samples. Because the coals within the trench averaged a depth of six feet beneath the surface, well within the weathering zone, it was assumed that the minerals in the ash were detrital in origin and the products of the overlying rock units. Preliminary analysis tends to support this contention, with higher quartz percentages found in coals with overlying silty or sandy units; lower quartz percentages found in coals whose overlying units were claystones or shales. Further study of coals within the soil weathering zone may add to the ability of distinguishing a coal's degree of mineral incorporation from upper rockmore » units.« less" @default.
- W270215238 created "2016-06-24" @default.
- W270215238 creator A5041441977 @default.
- W270215238 date "1992-01-01" @default.
- W270215238 modified "2023-09-28" @default.
- W270215238 title "The mineralogy of coal ash from a section of the Texas Eastern Pipeline: A method of gauging the degree of coal weathering" @default.
- W270215238 hasPublicationYear "1992" @default.
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