Mineralogy and ultrastructure of some alteration products of Yamato-86032 meteorite

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Author(s)

Abstract

White products of Yamato-86032 meteorite sample have been studied using linear localization detector method and TEM (powders examination and ultramicrotomed thin-sections). In addition to the mineral phases of the meteorite (olivine, pyroxene, labradorite), calcium sulfate and hydrous minerals have been identified. The observed glassy matrix has high silica content and the alteration products in contact with glass are mainly Fe-Al and Fe-Al-Na-K-S compounds. The presence of these mineral phases suggests that a sulfuric acid alteration has to be involved for the formation of the white products studied.

White products of Yamato-86032 meteorite sample have been studied using linear localization detector method and TEM (powders examination and ultramicrotomed thin-sections). In addition to the mineral phases of the meteorite (olivine, pyroxene, labradorite), calcium sulfate and hydrous minerals have been identified. The observed glassy matrix has high silica content and the alteration products in contact with glass are mainly Fe-Al and Fe-Al-Na-K-S compounds. The presence of these mineral phases suggests that a sulfuric acid alteration has to be involved for the formation of the white products studied.

Journal

  • Proceedings of the NIPR Symposium on Antarctic Meteorites

    Proceedings of the NIPR Symposium on Antarctic Meteorites 8, 185-193, 1995-03

    National Institute of Polar Research

Codes

  • NII Article ID (NAID)
    110000030030
  • NII NACSIS-CAT ID (NCID)
    AA10784627
  • Text Lang
    ENG
  • Article Type
    Departmental Bulletin Paper
  • ISSN
    09145621
  • Data Source
    NII-ELS  IR 
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