Maceral and Organic Geochemical Characteristics of the No. 6 Coal Seam from the Haerwusu Surface Mine, Inner Mongolia, China

Haerwusu Surface Mine of the Jungar Coalfield is a large coal mine. Its formation environments have not been reported in detail. In order to reconstruct paleoenvironment peat formation, nine samples were collected, and analyzed using microscope, column chromatography, gas chromatography (GC), chromatography–mass spectrometry (GC–MS). According results microscopic analysis, average random vitrinite reflectance ( R r ) 0.73%, indicating low rank bituminous coal. Vitrinite group predominant macerals with an content 54.54%, followed by inertinite 35.99%. The higher contents indicate widespread wildfire events during formation. distribution pattern n-alkanes, cross plot between Pr/ n-C 17 Ph/ 18 , lower saturated/aromatic hydrocarbon ratios (0.22–0.68) presence cadalene, retene, simonellite indicates that organic matter predominantly terrestrial plants small amount aquatic organisms. ternary diagram Pr/Ph, relative abundance fluorene, dibenzofuran dibenzothiophene continental–oceanic alternative facies. combustion-derived PAHs are also indicative