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A Discussion on Coal Sulfur Features and Sedimentary Environment in Mayixi No.2 Minefield, Guizhou
Author(s): 
Pages: 8-12
Year: Issue:  7
Journal: Coal Geology of China

Keyword:  sulfur in coalsedimentary environmentMayixi No.2 minefieldGuizhou;
Abstract:  Based on minefield geological exploration data and coal quality tested results, discussed coal sulfur features and sedimentary environment in the Mayixi No.2 minefield. The result has shown that the variation of sulfur content is rather large in coal seams. From bottom to top, bottom part Nos. 30 and 29 are high sulfur coal seams with highest sulfur content 7.2%;lower part from No.19 to No.26 are medium high to high sulfur coal seams;No.17-1 is low sulfur coal seam;upper part from No.3 to No.12-1 coal seams are medium high sulfur coal seams. As a whole, sulfur contents present high southeast and low northwest on plane. Main factor to cause different coal sul-fur contents is coal accumulation environment. The 17-1 coal seam was developed in flood plain facies, the sulfur is mainly primary sul-fur in coal forming plants, thus low coal sulfur content;while other coal seams forming environment were largely impacted by sea water with more secondary pyritic sulfur, thus causing rather high sulfur content.
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