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ID 13912
Eprint ID
13912
フルテキストURL
著者
山本 雅弘 Department of Earth Sciences, Okayama University
加瀬 克雄 Department of Earth Sciences, Okayama University
Harada, Kaori Department of Earth Sciences, Okayama University
抄録
Sulfur isotope rations of sulfide minerals in the ore specimens from the deposit of the Tsuchikura mine are distrib-uted in a range from -0.8 to 5.4%, mostly from +0.5 to 3.0%, close to the previous data (from +1 to +3%) by Miyake and Sasaki (1980). The distribution range is also similar to the major Besshi-type deposites of the Sambagawa terrain. Sulfur isotope fractionation between coexisting pyrite and chalcopyrite is not uniform. This may be largely due to spatial tearrangament of the initial orebodies to the present form. Sulfide minerals mostly pyrite from host rocks (siltsones, sandstones, basaltic rocks) exhibit remarkably low δ34S values ranging from -49.3 to -2.6%, dis-tinctly different from the δ34S values for sulfide minerals of ores. The low δ34S values may indicate the bacteriogenic origin of host rock sulfides, although it seems peculiar that basaltic rocks also have extremely low δ34S values.
キーワード
Sulfur isotope ratio
Besshi-type deposit
Tsuchikura mine
Pyrite
Chalcopyrite
発行日
1998-09-20
出版物タイトル
Okayama University Earth Science Report
出版物タイトル(別表記)
岡山大学地球科学研究報告
5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
17
終了ページ
22
ISSN
1340-7414
NCID
AN10506284
資料タイプ
紀要論文
言語
English
OAI-PMH Set
岡山大学
著作権者
岡山大学地球科学研究報告編集委員会
論文のバージョン
publisher
査読
無し
Sort Key
3
Eprints Journal Name
esr