Show simple item record Pickering, Ranard J. 2006-08-16T17:30:40Z 2006-08-16T17:30:40Z 1953
dc.identifier.citation Pickering, Ranard J., 1953, An Analysis of Selected Indiana Coals by the Particle Count Method. Indiana Geological Survey Report of Progress 6, 23 p., 4 fig., 1 pl. en
dc.description Indiana Geological Survey Report of Progress 6 en
dc.description.abstract The bituminous coals of Indiana show a characteristic bright and dull banding which is due to alternating bands of five distinct physical constituents, namely, vitrain, clarain, durain, fusain, and mineral matter. A petrographic analysis of Indiana Coals V, VI, and VII was made to determine whether any appreciable variation in the content of these ingredients occurred. The “particle count method” was used in analyzing the coals. In order to establish a standard for comparing Coals V, VI, and VII, an index number was determined for each sample by dividing the combined clarain-durain content by the vitrain content. These index numbers are the most reliable and satisfactory basis for the comparison of coals, and they maybe used to some extent in coal correlation. Because vitrain has the most desirable combustion properties, a coal that has a high vitrain content may be more desirable commercially. Coals VI and VII were found to have a distinctly higher vitrain content than Coal V. Localities of high-vitrain content within the various coal beds in Indiana are outlined in this report. Suggestions for further use of the particle count method in coal analysis are made. en
dc.description.sponsorship Indiana Department of Conservation en
dc.format.extent 1352543 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Indiana Geological Survey en
dc.relation.ispartofseries Report of Progress en
dc.relation.ispartofseries 6 en
dc.rights This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License. To view a copy of this license, visit or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA. en
dc.subject Sedimentology en
dc.subject Coal en
dc.subject Petrography en
dc.subject Coal Analysis en
dc.subject Indiana en
dc.title An analysis of selected Indiana coals by the particle count method en
dc.type Technical Report en

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