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Significance of the System CaMgSi2O6-CaAl2SiO6-CaTiAl2O6 to Ca-Al- Rich Inclusions in Carbonaceous Chondrites
https://nipr.repo.nii.ac.jp/records/964
https://nipr.repo.nii.ac.jp/records/9645fec1e97-440f-4c50-828f-4ff27c36b811
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000011510 (1.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1979-03-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Significance of the System CaMgSi2O6-CaAl2SiO6-CaTiAl2O6 to Ca-Al- Rich Inclusions in Carbonaceous Chondrites | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Onuma, Kosuke
× Onuma, Kosuke× Kimura, Makoto× Yagi, Kenzo |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Geology and Mineralogy, Faculty of Science, Hokkaido University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Geology and Mineralogy, Faculty of Science, Hokkaido University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Geology and Mineralogy, Faculty of Science, Hokkaido University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The system CaMgSi_2O_6-CaAl_2SiO_6-CaTiAl_2O_6 was found to be significant for elucidating the crystallization of Ca-Al-rich inclusions in carbonaceous chondrites. Two clinopyroxenes (ss)(ss : solid solution) were found in the present system : One is Ti-bearing diopside (ss) and the other is Ti-pyroxene (ss) containing TiO_2 up to 8.7wt.%. The chemical composition of this Ti-pyroxene (ss) is very close to that of clinopyroxene found in Ca-Al-rich inclusions of the Allende meteorite. An invariant point was confirmed at 1230℃ where the Ti-pyroxene coexists with spinel, perovskite, anorthite, melilite, and liquid. The assemblage of the crystalline phases is the same as that of Ca-Al-rich inclusions of the Allende meteorite. The bulk chemical compositions of the Type B inclusions of the Allende meteorite (GROSSMAN, 1975) are calculated in terms of CaMgSi_2O_6,CaAl_2SiO_6,CaTiAl_2O_6 and MgAl_2O_4 (spinel), and projected to the present system. The possible formation mechanism of the inclusions is discussed with reference to the crystallization of the system. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 12, p. 134-143, 発行日 1979-03 |