A Classification of Several Yamato-75 Chondrites

P(論文) The Yamato-75108 to-75257 chondrites are considered to be originally one meteorite which was broken into many fragments (MATSUMOTO, 1978; MATSUMOTO et al., 1979). Electron microprobe studies have been made on the olivine and orthopyroxene in ten chondrites (Yamato-75109,-75110,-75111,-75112,-7...

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Bibliographic Details
Main Authors: Matsumoto, Yukio, Hayashi, Masao
Language:English
Published: 1980
Subjects:
Yamato
Memoirs of National Institute of Polar Research
Polar Research
Online Access:https://nipr.repo.nii.ac.jp/record/1087/files/KJ00000011613.pdf
https://nipr.repo.nii.ac.jp/records/1087
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Summary:P(論文) The Yamato-75108 to-75257 chondrites are considered to be originally one meteorite which was broken into many fragments (MATSUMOTO, 1978; MATSUMOTO et al., 1979). Electron microprobe studies have been made on the olivine and orthopyroxene in ten chondrites (Yamato-75109,-75110,-75111,-75112,-75113,-75114,-75115,-75129,-75131 and -75139) out of these fragments. Textural characters of chondrules, matrix, igneous glass and secondary feldspar, and the mean composition, mean deviation, and percent mean deviation of olivines and orthopyroxenes are given. As a result, the chondrites are tentatively classified as L group and petrologic type 4-5. Accordingly, these chondrites were possibly one meteorite originally. departmental bulletin paper

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