Experimental alteration of a meteoritic model-glass in different media

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概要

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• A meteoritic model-glass has been altered under oxidizing conditions in different media (water and sulfuric acid) at 80℃ and 0℃. The reactions were followed by analysis of solutions and solids (XRD, FTIR, SEM, TEM). After reaction, all the elements were detected in solution, at different levels of concentration related to the medium. The most aggressive media were sulfuric acid at pH 1 for 80℃ and 0℃ runs. In such alteration conditions, the surface of the solid evolved rapidly according to the temperature. At 80℃, one noticed the development of a Si-rich layer containing calcium and sulfate ions which combined to form gypsum. At 0℃, only smooth surface with etch pits and scarce gypsum crystals were observed. In contact with glass, ultramicrotomed thin-sections studied by TEM revealed the presence of two kinds of products : Fe-Al silicate phases (in deionized water and H_2SO_4 solution with pH_4) and a high-silica content layer (H_2SO_4 solution with pH1,at 80℃).

• 国立極地研究所の論文

著者

• Nakashima Satoru

  Geological Imstitute University Of Tokyo

• Nakashima Satoru

  Geological Institute Faculty Of Science University Of Tokyo

• Thomassin Jean-hugues

  Materials And Environmental Geology Faculty Of Engineering Ura Cnrs 721 University Of Poitiers

• Coustumer Philippe

  Materials And Environmental Geology Faculty Of Engineering Ura Cnrs 721 University Of Poitiers

• Bourdin Emmanuel

  Materials and Environmental Geology, Faculty of Engineering, URA CNRS 721, University of Poitiers

• Abrioux Marie-Francoise

  Materials and Environmental Geology, Faculty of Engineering, URA CNRS 721, University of Poitiers

• Bourdin Emmanuel

  Materials And Environmental Geology Faculty Of Engineering Ura Cnrs 721 University Of Poitiers

• Abrioux Marie-francoise

  Materials And Environmental Geology Faculty Of Engineering Ura Cnrs 721 University Of Poitiers

• Coustumer Philippe

  Materials and Environmental Geology, Faculty of Engineering, URA CNRS 721, University of Poitiers

• Thomassin Jean-Hugues

  Materials and Environmental Geology, Faculty of Engineering, URA CNRS 721, University of Poitiers

関連論文

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• Mineralogy and ultrastructure of some alteration products of Yamato-86032 meteorite
• Experimental alteration of a meteoritic model-glass in different media

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