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The anthracite, a low-grade contact metamorphic rock, is found in the Late Permian coal seams which are distributed around the Qitianiing granite body in Hunan province. Their petrological and petrochemical, trace-ele-
ment, rare-earth element and carbon-isotope geochemistry and chemical structure of organic constituents based on X-ray diffraction, IR and Raman spectrometry are discussed. 96106719 Anal ses of the solvent-soluble P roducts of Yubari and Taiheiyo coa s treated with zinc and buty Y iodide under mild conditions Yoneyama, Y. et al., Nippon Enerugi Gakkaishi, 1996,75, (l), 35-41. (In Japanese) Saturate fractions (Sa) were fractionated from the hexane soluble products by the repetitive butylation of Yubari and Taiheiyo coals using zinc and Bu iodide under mild conditions, and then fractionated further by gel permeation chromatography to investigate the structural features and biological markets. 96106727 Evaluation of coal chemical structure Sakawa, M. Tetsu to Hagane, 1996, 82, (S), 347-352. (In Japanese) Discusses the recent trends and future outlook of researches on the chemical structure of coal, especially from a viewpoint of practical use of coal.
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