ID 49209
JaLCDOI
タイトル(別表記)
The temperature and pressure conditions of synthetic Sibirskite and Parasibirskite
フルテキストURL
著者
狩野 正裕 岡山大学大学院自然科学研究科
山川 純次 岡山大学大学院自然科学研究科
抄録
Sibirskite (CaHBO ) and parasibirskite ₃ are in the relation of polymorphism, these are regarded as the alteration products of takedaite (Ca₃B₂O₆), occurs at Fuka mine, Okayama Prefecture. The synthesis of parasibirskite was reported by the Schäfer (1968a, b) etc. and the synthesis of sibirskite was reported by the Sun et al. (2011). To determine the formation condition of sibirskite and parasibirskite in the natural, they were synthesized from the natural takedaite (Ca₃B₂O₆). As a result, both of sibirskite and parasibirskite were formed by the duration time of 7 days with 1000 kg/cm2 and 300 oC, on the other hand, only sibirskite was formed by the duration time of 14 days with the same condition. In addition, the mixtures of sibirskite and parasibirskite were examined under the various temperatures and pressures of hydrothermal conditions. As a result, the upper limit of the stable temperature and pressure conditions of sibirskite was estimated between 350 oC and 400 oC at 1500 kg/cm2, and between 400 oC and 450 oC at 500 kg/cm2 . In the higher temperature than the condition, sibirskite were changed into shimazakiite (Ca₂B₂O₅).
キーワード
Sibirskite
Parasibirskite
Shimazakiite
Fuka
Hydrothermal synthesis
出版物タイトル
Okayama University Earth Science Report
発行日
2012-12-26
19巻
1号
出版者
岡山大学理学部地球科学教室
出版者(別表記)
Department of Earth Sciences, Faculty of Science, Okayama University
開始ページ
13
終了ページ
17
ISSN
1340-7414
NCID
AN10506284
資料タイプ
紀要論文
OAI-PMH Set
岡山大学
言語
Japanese
著作権者
© 2012 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン
publisher
査読
無し
NAID
Sort Key
5
Eprints Journal Name
esr
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