Angrite Asuka-881371: Preliminary examination of a unique meteorite in the Japanese collection of Antarctic meteorites

• YANAI K.

  National Institute of Polar Research

抄録

A new angrite-type achondrite was discovered at a new site of meteorite concentrations in Antarctica by the Japanese expedition party in December 1988. Antarctic meteorite Asuka-881371 (previously Asuka-9) is an angrite-type achondrite, which is a rounded individual stone, almost completely covered with a dull-black fusion crust. Pale green, relatively large porphyritic olivine crystals can be seen on the exposed face of the interior. Asuka-881371 is an unbrecciated, igneous rock with typically ophitic (doleritic) texture, consisting mainly of olivine, pyroxene (fassaite) and plagioclase with spinel. From its texture, mineral assemblages and chemical composition, Asuka-881371 is identified and classified as an angrite. However, based on several characteristics, especially bulk chemical composition, Asuka-881371 is different from Angra dos Reis, LEW86010 and LEW87051 angrites which are the three previously known angrites collected from non-Antarctic and Antarctic regions.

収録刊行物

• Proc. NIPR Symp. on Antarct. Meteorites

  Proc. NIPR Symp. on Antarct. Meteorites 7 30-41, 1994

  国立極地研究所

詳細情報

• CRID: 1571698601726873600
• NII論文ID: 110000029996
• NII書誌ID: AA10784627
• ISSN: 09145621
• 本文言語コード: en
• データソース種別:
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