Geochemistry of coals from the Elk Valley coalfield, British Columbia, Canada |
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Authors: | F Goodarzi DA Grieve H Sanei T Gentzis NN Goodarzi |
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Institution: | aGeological Survey of Canada, 3303-33rd Street N.W., Calgary, Alberta, Canada T2L 2A7;bBritish Columbia Geological Survey Branch, British Columbia Ministry of Energy, Mines and Petroleum Resources, 122, 525 Superior Street, Victoria, British Columbia, Canada V8V 1X4;cPetron Resources, L.P. Suite 200, 300 Network Boulevard, Frisco, TX, 75070, USA;dOil and Gas Division, NEXON INC, 801-7th Avenue, Sw, Calgary, Alberta, Canada T2P3P7 |
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Abstract: | The Elk Valley coalfield of British Columbia is one of the major coal producing areas in Canada. The coals are of Cretaceous and Jurassic–Cretaceous age and range in rank from high-volatile to low-volatile bituminous (%Romax: 0.8–1.6). Coal seams from outcrops and active mines in this coalfield were analysed for rank and maceral composition using reflected light microscopy, for geochemistry using AAS, INAA, and ICPES, and also by proximate and ultimate analyses. The Elk Valley coal seams contain low average concentrations of hazardous elements such as As, Mo, Pb, and Se. However, there are seams that contain relatively high concentrations of some of these elements, such as 8 mg/kg and 108 mg/kg of arsenic. When the geochemistry of coal seams is compared within the different parts of the coalfield, the elemental composition amongst the seams from various sections located in the central area of the coalfield is similar. Coal seams in the northern area of the coalfield have different geochemistry than coal seams in other areas of the coalfield; seams in the northern area have much higher As, Br, Cr, Cu, Fe, K, and Na content, but contain less Ca. |
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Keywords: | Coal geochemistry Trace elements Elk Valley coalfield British Columbia Canada |
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