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Title Transcription
リヨウ ニヨリ ショウジタ タンシャ シソキセキ ボタイ ノ ケッショウ コウゾウ ニツイテ
Title Alternative (English)
On the Structure of Clinohypersthene Derived as a Host Phase from Parental Pigeonite by Exsolution
File
language
eng
Author
Yamaguchi, Yoshiaki
Tomita, Katsutoshi
Description
Structure refinement was made for a clinohypersthene C_<.02> Mg_<.51> Fe_<.47> Si_20_6, derived as a host phase from parental pigeonite by exsolution of augite along the metastable extension of the pigeonite solvus into the stability field of hypersthene. The particular characteristics of the structure are discussed, and compared with those of pigeonite and orthohypersthene. The clinohypersthene shows no indication of anti-phase domain structure on the reflections with (h+k) odd, and has six-fold coordination of oxygen around M2 site. Clino- and orthopyroxenes of hypersthene composition have closely similar atomic parameters. Kinetic factors are expected to be strongly responsible for the metastable extension of the pigeonite solvus.
Journal Title
Memoirs of the Faculty of Science, Shimane University
Volume
19
Start Page
151
End Page
157
ISSN
03879925
Published Date
1985-12-25
NCID
AN00108106
Publisher
島根大学理学部
Publisher Aalternative
The Faculty of Science, Shimane University
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Science and Engineering
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