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TitlePetrographic and chemical properties of a lignite from Estevan, Saskatchewan
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorCameron, A R; Birmingham, T F
SourceGeological Survey of Canada, Paper no. 71-8, 1971, 27 pages, Open Access logo Open Access
PublisherGeological Survey of Canada
Mediapaper; on-line; digital
File formatpdf
Lat/Long WENS-103.0000 -102.5000 49.2500 49.0000
Subjectsgeochemistry; industrial minerals; fossil fuels; chemical analyses; element distribution; molybdenum geochemistry; petrographic analyses; uranium geochemistry; vanadium geochemistry; lignite; Cypress Hills Formation; Ravenscrag Formation; Swift Current Beds; Wood Mountain Formation; Tertiary
Illustrationslocation maps; graphs; tables; histograms
Released1971 01 01; 2015 08 07
AbstractA column sample of a 98- inch- thick lignite seam from a strip mine near Estevan, Saskatchewan was analyzed petrographically and chemically. The maceral terminology applied was esse ntially that of bituminous coals except that three varieties of vitrinite were identified, namely, structured, structureless and groundmass. On the basis of petrographic characteristics, the seam was divided into ten intervals. Maceral variations among intervals showed a fairly high concentration of inertinite, especially fusinite and semifusinite, in the lower part of the seam. Chemical data showed sulphur contents to be well below 1 per cent in all intervals while ash contents varied from 6. 8 to 8. 6 per cent {dry basis) for the lower 88 inches of the seam. Volatile matter contents increased with an increase in the proportions of groundmass vitrinite, resinite and exinite. The petrographic data suggest a forest - moor origin for the seam with reed-moor and open-water influences gradually becoming stronger as seam accumulation progressed. Determinations of uranium, vanadium and molybdenum by intervals showed low concentrations. The highest uranium value was just under 3 ppm (total coal basis) obtained on the lowest interval of the seam. The best vanadium value was about 10 ppm (total coal basis) obtained on a high ash interval near the top of the seam. Molybdenum concentrations were all below 100 ppm on the ashed coal basis.

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