Low-temperature magnetic behavior of isocubanite from seafloor hydrothermal deposits in the Okinawa Trough
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- Kato, Chie
- Faculty of Social and Cultural Studies, Kyushu University
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- Ohno, Masao
- Faculty of Social and Cultural Studies, Kyushu University
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- Hatakeyama, Tadahiro
- Institute of Frontier Science and Technology, Okayama University of Science
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- Yamada, Yasuhiro
- Department of Chemistry, Tokyo University of Science
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- Honda, Fuminori
- Central Institute of Radioisotope Science and Safety, Kyushu University
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- Shimada, Kazuhiko
- Faculty of Science, Kyushu University
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- Nagase, Toshiro
- The Tohoku University Museum, Tohoku University
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- Totsuka-Shiiki, Shuhei
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology Sumitomo Metal Mining Co., Ltd.
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- Kuwahara, Yoshihiro
- Faculty of Social and Cultural Studies, Kyushu University
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- Ishibashi, Jun-ichiro
- Faculty of Science, Kyushu University Kobe Ocean-Bottom Exploration Center, Kobe University
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Description
The characteristic behavior of magnetic remanence correlated with mineralogical textures and composition was observed using low-temperature magnetometry, microscopy, and chemical analysis of three isocubanite samples collected from hydrothermal deposits in the Okinawa Trough and a sample transformed from natural cubanite via heating. Both zero-field remanence acquired at 5 K and field cooling remanence acquired at 300–5 K of all samples sharply decreased with increasing temperature at approximately 100 K. In addition, low-temperature cycling of isothermal remanence at 300 K exhibited a transition at approximately 100 K; remanence increased with decreasing temperature and vice versa. The intensity of remanence at low temperature and sharpness of the transition varied across samples with different compositions and microscopic textures, that is, the presence or absence of chalcopyrite lamellae and their widths. The sample obtained from a hydrothermal chimney, in which the magnetic transition was most clearly observed, was also subjected to X-ray diffraction, Mössbauer spectroscopy, electrical resistivity, and magnetic hysteresis measurements. The obtained results were generally consistent with those reported previously for unnamed mineral CuFe_3S_4 with an ordered cation arrangement. The low-temperature magnetic behavior of isocubanite possibly depends on the degree of cation ordering and can be regarded as an indicator of chemical composition and cooling history. Therefore, low-temperature magnetometry is useful for the detection of isocubanite and a potentially powerful technique for the prompt estimation of its composition and texture, contributing to our understanding of the formation process of hydrothermal deposits.
Journal
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- Physics and Chemistry of Minerals
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Physics and Chemistry of Minerals 51 5-, 2024-02-05
Springer
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Keywords
Details 詳細情報について
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- CRID
- 1050301684637190144
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- NII Book ID
- AA00773930
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- ISSN
- 14322021
- 03421791
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- HANDLE
- 2324/7236433
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
