WEKO3
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Yamato-8451: A newly identified pyroxene-bearing pallasite
https://doi.org/10.15094/00004665
https://doi.org/10.15094/0000466567894a63-2df9-437c-99df-6011836e06b6
名前 / ファイル | ライセンス | アクション |
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KJ00000036471 (1.0 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1995-03-01 | |||||
タイトル | ||||||
タイトル | Yamato-8451: A newly identified pyroxene-bearing pallasite | |||||
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 | |||||
ID登録 | ||||||
ID登録 | 10.15094/00004665 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Yanai, Keizo
× Yanai, Keizo× Kojima, Hideyasu |
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著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Yamato-8451 is an unusual meteorite which is newly identified as a pyroxene-bearing pallasite. It consists mainly of Fe-Ni metal, olivine and pyroxene, and shows a porphyritic texture typical of most olivine, the same texture as that of all known pallasite meteorites. Yamato-8451 might have been classified as one of the common pallasites because of its exotic texture and mineral assemblage, a unique feature of pallasites, but it is highly unusual because it contains pyroxene. Most olivine and pyroxene crystals are well rounded to subrounded, but angular grains and grain aggregates are also recognized in the metallic host. Pyroxenes are mm-sized and consist of three different types in Ca content. These are : (1) exceptionally Ca-poor polysynthetic twinned orthopyroxene (under Wo 1.0), (2) Ca-poor non-polysynthetic twinned orthopyroxene (Wo 1.0-3.5) and (3) clinopyroxene (over Wo 40). The olivine composition is Fo 89.6 on average, the most magnesian known in all pallasites. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10784627 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Meteorites 巻 8, p. 1-10, 発行日 1995-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |