Geochemical distribution of trace elements in Kaffioyra and Longyearbyen coals, Spitsbergen, Norway

Mineralogy and geochemistry of Late Permian coals from the Donglin Coal Mine in the Nantong coalfield in Chongqing, southwestern China

“…4 coals and are more enriched in coal samples than the roof rock samples, partially attributable to its organic affinity. Lithium and Be present an organic affinity in the Longyearbyen coals of Norway (Lewinska-Preis et al, 2009). High field strength elements (HFSE, including Nb, Ta, Zr, Hf, and Th), which are significantly enriched in alkali tonsteins , reveal different vertical distribution styles, ruling out the possibility of volcanic ash input during coal accumulation.…”

“…The modes of occurrence of trace elements in the Donglin coals were preliminarily investigated by correlation analysis, which is an effective indirect method for coal geochemistry (Dai et al, 2015a,d;Hu et al, 2006;Lewinska-Preis et al, 2009;Mukherjee et al, 1988;Suarez-Ruiz et al, 2006;Wang et al, 2008). The Pearson, partial correlation coefficients and covariances between ash yields, selected major element oxides (Al 2 O 3 , CaO, and Fe 2 O 3 , corresponding to clay minerals -kaolinite + montmorillonite, carbonates − calcite, and pyrites, respectively), and trace elements on whole coal basis are tabulated in Table 7.…”

A high-pyrite semianthracite of Late Permian age in the Songzao Coalfield, southwestern China: Mineralogical and geochemical relations with underlying mafic tuffs

“…In different coal basins and coal-forming periods, there are generally one or some particular geological factors that may influence the enrichment of trace elements in coals (Hower, et al, 1999;Dai et al, 2005a;Hower, et al, 2005Hower, et al, ,2007Sun et al, 2007;Belkin et al, 2009;Kolker et al, 2009;Lewińska-Preis et al, 2009;Wang, 2009Wang, ). al., 2005aWang, ,b, 2006b, though there are syngenetic volcanic ashes (felsic or alkalic) and submarine exhalation that influenced inorganic compositions of coal (Dai et al, , 2008b.…”

Concentrations of Lithium in Chinese Coals

“…The modes of trace elements vary greatly among coals, and it is always possible that there exist extraordinary forms in a specific coal. The concentration mechanism of lithium in coal has been discussed by several authors (Bai et al, 2002;Alastuey et al, 2006;Lucyna Lewińska-Preis, 2009). Alastuey et al (2006) reported that Li and other trace elements are related silicates in the coals of Spain.…”