An experimental study of hydrous mineral formation by reaction between forsterite and water vapor
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概要
- 論文の詳細を見る
An experimental study of hydrous mineral formation reaction between the synthetic forsterite and water vapor has been carried out with autoclaves at temperatures and pressures below the critical point. We succeeded in synthesizing hydrous minerals under these conditions for the first time. Patterns obtained by powder X-ray diffraction and with using a Gandolfi camera show that serpentine (chrysotile or lizardite), brucite and brucite-like material were formed by the hydration of forsterite. The reaction nearly obeys 2Fo+3H2O(g)=1Serp+1Bru. The IR absorption spectra of the charge using Fourier transform infrared microspectrometer confirms the formation of hydrous phase since an absorption peak appeared at -3690cm-1, which can be assigned to an absorption peak of the OH-bond. The rim thickness of the layer produced by the hydration of forsterite was estimated to be roughly 1μm after >1000hr, at 230 °C and a water vapor pressure of 27bar. The hydration rate is much smaller than that predicted theory.
- 日本学士院の論文
著者
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Imae Naoya
Antarctic Meteorites Research Center National Institute Of Polar Research
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Imae Naoya
Antarctic Meteorite Research Center National Institute Of Polar Research
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SHINODA Keiji
Department of Pediatric Dentistry, Asahi University School of Dentistry
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Shinoda Keiji
Department Of Geosciences Faculty Of Science Osaka City University
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NAKAMUTA Yoshihiro
Earth and Planetary Science, Faculty of Science, Kyushu University
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SHINODA Keiji
Department of Geosciences, Faculty of Science, Osaka City University
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