Petrological Studies of Yamato-74 Meteorites (1)

P(論文) Chemical and petrologic classification of seven Yamato-74 meteorites was investigated in terms of microscopic observations and X-ray powder method. Yamato-74013 meteorite belongs to calcium-poor achondrite, diogenite with a granoblastic texture. Other six meteorites are ordinary chondrites. Re...

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Bibliographic Details
Main Authors: Yabuki, Hideo, Yagi, Kenzo, Onuma, Kosuke
Language:English
Published: 1978
Subjects:
Yamato
Memoirs of National Institute of Polar Research
Polar Research
Online Access:https://nipr.repo.nii.ac.jp/record/884/files/KJ00000011857.pdf
https://nipr.repo.nii.ac.jp/records/884
Description
Summary:P(論文) Chemical and petrologic classification of seven Yamato-74 meteorites was investigated in terms of microscopic observations and X-ray powder method. Yamato-74013 meteorite belongs to calcium-poor achondrite, diogenite with a granoblastic texture. Other six meteorites are ordinary chondrites. Recrystallization is fairly advanced in chondrites, except in Yamato-74191 meteorite which contains glassy material and clinohypersthene. Composition of olivine and orthopyroxene and petrographic observation indicate that Yamato-74014,-74080,-74094,-74191,-74362,and -74459 meteorites belong to H5,L6,H6,L3,L6 and H6 types of chondrite according to the classification of VAN SCHUMUS and WOOD (1967). departmental bulletin paper

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