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- W82943814 abstract "The results thus far obtained in the initial phase of a study of the mode of occurrence of mineral matter in anthracite are presented. The mineral content of 156 strata from 12 coal columns was determined. Ash yield data for the strata from 11 of the columns were also procured. In addition, one column was studied to determine the relative concentration of maceral material in each inch interval through the entire seam thickness. Each four-inch interval of this column was analyzed to determine the concentration of sulfur present. Geologic age and geographic location appear to be correlated, to some extent, with the types of minerals encountered in the seams. The Allegheny coals yielded, on the average, the highest ash residue and contained the greatest variety of minerals. Seam samples collected in the Southern Anthracite Field contained the greatest concentrations of metamorphic minerals. A petrographic procedure permitting the differentiation of anthracite seams into compositionally different zones has been provided, through creation of a provisional classification of vitrinitic macerals common in anthracite coal. Quantification of the reflectance exhibited by various anthrinoid macerals has made evident that anthracitic coal seams are stratified rock bodies consisting of layers or lenses that are, in themselves,more » distinctive mixtures of maceral and mineral materials. The compositional heterogeneity encountered appears to be far greater than that previously ascribed to anthracite.« less" @default.
- W82943814 created "2016-06-24" @default.
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- W82943814 date "2016-01-01" @default.
- W82943814 modified "2023-09-27" @default.
- W82943814 title "THE NATURE AND OCCURRENCE OF ASH FORMING MINERALS IN ANTHRACITE" @default.
- W82943814 hasPublicationYear "2016" @default.
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