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Chemical composition of Fe-Ni metal and phosphate minerals in Yamato-82094 carbonaceous chondrite
https://doi.org/10.15094/00004640
https://doi.org/10.15094/00004640564f7196-0e6f-4980-a69d-b016ce02c3e4
名前 / ファイル | ライセンス | アクション |
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KJ00000036446 (1.2 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1994-03-01 | |||||
タイトル | ||||||
タイトル | Chemical composition of Fe-Ni metal and phosphate minerals in Yamato-82094 carbonaceous chondrite | |||||
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 | 10.15094/00004640 | |||||
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) |
Shibata,Yasuhiro
× Shibata,Yasuhiro× Matsueda,Hiroharu |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Geology and Mineralogy, Faculty of Science, Hokkaido University/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 mineralogy of Fe-Ni metal and associated minerals in the Yamato (Y)-82094 carbonaceous chondrite (CO) have been studied by optical, scanning electron microscope and electron microprobe techniques. There are some characteristic features for the Fe-Ni metal in the Y-82094 : (1) Ni contents in taenite grains are divided into two groups consisting of low-and high-Ni taenite. (2) Partition of Co between coexisting kamacite and taenite shows relatively higher temperatures (approximately 800℃), and their temperature ranges are wide. (3) polycrystalline taenite exists. (4) Fe-Ni metal and troilite form micron-sized intergrowths. (5) The Ni-Co trend of kamacite in chondrule is positive. The high-Ni taenite could have formed through thermal metamorphism on the parent body, while low-Ni taenite might have formed due to reheating caused by shock metamorphism on the parent body or during the colling process of chondrule formation. The positive Ni-Co trend of kamacite in Y-82094 is similar to that of the metal in CR chondrites. This trend may suggest that kamacite in Y-82094 preserves the primitive chemical composition indicating nebula condensation origin. The Fe-Ni metal grains have many phosphate mineral inclusions (whitlockite, brianite and panethite). The mode of occurrence of brianite and panethite indicates that they might have formed simultaneously with the Fe-Ni metal in the nebula. | |||||
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 7, p. 110-124, 発行日 1994-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |