Structural Change of a Volcanic Glass(obsidian) under High Pressure.
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- Okuno M.
- Faculty of Science, Kanazawa University
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- Nakagami S.
- Faculty of Science, Kanazawa University
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- Shimada Y.
- Faculty of Science, Kanazawa University
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- Kusaba K.
- Institute for Material Research, Tohoku University
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- Syono Y.
- Institute for Material Research, Tohoku University
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- Ishizawa N.
- Material and Structural Laboratory of Tokyo Institute of Technology
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- Yusa H.
- National Institute for Research in Inorganic Materials
Bibliographic Information
- Other Title
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- Structural Change of a Volcanic Glass o
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Abstract
High pressure structural change of an obsidian from Iceland has been investigated using X-ray radial distribution function (RDF) analysis and Raman spectroscopy. Obsidians have been compressed under 4 GPa at 20°C and 500°C by a cubic anvil apparatus. The obsidian treated under 4 GPa-20°C condition shows almost the same density and RDF curve as the original obsidian. However, the permanent densification of about 9% was observed by the compression under 4 GPa-500°C Based on RDF and Raman analyses, the structure of obsidian may change in the dominant TO4 (T=Si and Al) from 5 and 6 to 4 and 3 membered rings by the compression at 500°C.
Journal
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- The Review of High Pressure Science and Technology
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The Review of High Pressure Science and Technology 7 128-130, 1998
The Japan Society of High Pressure Science and Technology
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Details 詳細情報について
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- CRID
- 1390282679358238208
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- NII Article ID
- 10002689039
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- NII Book ID
- AN10452913
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- ISSN
- 13481940
- 0917639X
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- NDL BIB ID
- 4493856
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed