Formation temperatures of natural coke in the lower Silesian coal basin, Poland. Evidence from pyrite and clays by SEM-EDX

Changes in geochemistry and mineralogy of thermally altered coal, Upper Hunter Valley, Australia

“…Previous studies of the interaction between coal and igneous intrusions have recognised three to four zones based on coal geochemistry (Ward et al, 1989;Goodarzi and Cameron, 1990;Kwiencińska et al, 1992;Karayigit and Whateley, 1997). Variations in the chemistry of the coal approaching the intrusion in the drill core samples from Dartbrook indicate the presence of three zones (Fig.…”

“…The impact of igneous intrusions on the organic component of coal has been reported in the U.S.A. (Podwysocki and Dutcher, 1971;Bostick and Collins, 1987;Thorpe et al, 1998;Meyers and Simoneit, 1999), Australia (Taylor, 1961;Kisch, 1966;Kisch and Taylor, 1966;Ward et al, 1989;Gurba and Ward, 2000;Othman and Ward, 2002), Antarctica (Brown and Taylor, 1961), China (Zheng et al, 1996;Ren et al, 1999), India (Ghosh, 1967), England (Jones and Creaney, 1977), Poland (Kwiencińska et al, 1992) and Turkey (Karayigit and Whateley, 1997). As noted by Finkelman et al (1998), however, the effect of igneous intrusions on the inorganic constituents of coal has received relatively little attention from researchers other than Goodarzi and Cameron (1990), Merritt (1990), Querol et al (1997), and Querol et al (2001).…”

The forms of occurrence and geochemistry of sulfides in hard coal deposits of the Libiąż Beds in the Upper Silesian Coal Basin, Southern Poland

“…Many previous studies (Balme 1956, Wiese & Fife 1986, Frankie & Hower 1987, Harvey & DeMaris 1987, Renton & Bird 1991, Kwiecińska et al 1992, Baruah 1995, Turner & Richardson 2004, Dai et al 2006,Elswick et al 2007, Widodo et al 2010, Chou 2012) have described the characteristics, type, morphology, genesis, and distribution of pyrite in coal seams from different deposits. In Poland, the issue of sulfides in coal has been discussed by Kucha & Lipiarski (1988) and Sawłowicz (2000).…”

Petrography, carbonate mineralogy and geochemistry of thermally altered coal in Permian coal measures, Hunter Valley, Australia

“…Golab (2003) and Golab and Carr (2004) used XRD analysis to show the mineralogy of the coal varies with distance from the fingers of the dyke with dawsonite, ankerite, quartz, albite, kaolinite, and mixed-layer clays dominant. Ankerite, albite, muscovite, siderite, and andalusite are restricted to the heated coal with the first The suite of minerals associated with the Dartbrook dykes and aureole, especially the carbonates, quartz and clay minerals have been consistently identified in other dyke-coal associations by other workers such as Kisch and Taylor (1966), Podwysocki and Dutcher (1971), Ward et al (1989), Merritt (1990), Kwiencińska et al (1992), Watkins (1996), Karayigit and Whateley (1997), Querol et al (1997) and Finkelman et al (1998).…”