Formation Mechanism of Maceral and Mineral Compositions of the “Barkinite” Liptobiolith from the Jinshan Mine, Anhui Province, China

In order to study the accumulation mechanism of “barkinite”, eight Late Permian channel benches (approximately 15‐cm across and 10‐cm deep) were taken from the Jinshan Mine, Anhui Province, China. The samples were analyzed by microscopical and geochemical methods. The microscopical observations indicate that the occurrence modes of “barkinite” in this area are different from those in other areas of China. The ratios of structureless “barkinite” are much higher in the Jinshan Mine, probably due to the flow‐water and marine influenced environments. Furthermore, vitrinite macerals also show a strong fluorescence. The vitrinite fluorescence characteristics have not been observed in the Permian “barkinite” coals from northern China. The composition and variation of minerals in the column section also showed that the swamps in the study area were seriously influenced by seawater in the early and late stage during the peat accumulation.

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