Diffuse reflectance spectra for heated samples of an H5 chondrite: Importance of oxygen fugacity at heating
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概要
- 論文の詳細を見る
We obtained (biconical) diffuse reflectance spectra of the Nuevo Mercurio (H5) ordinary chondrite in the 200-2500 nm wavelength region. The samples were heated in the temperature range of 800-1200℃ at constant oxygen fugacities at one log unit below the iron-wustite (IW) buffer (IW-1) and two log units above the IW buffer (IW+2). The spectra of the samples heated to temperatures lower than 1050℃ at IW+2 show low spectral contrast and shorter wavelength positions of UV drop-off compared with the unheated <100 μm sample. On the basis of our heating experiments, this work suggests that oxygen fugacity affects the spectra of the heated samples especially at IW+2,implying that oxygen-fugacity control is important for heating experiment and that oxygen fugacity may play a role in the surface processes on asteroids.
- 国立極地研究所の論文
著者
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Mikouchi Takashi
Mineralogical Institute Graduate School Of Science University Of Tokyo
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Miyamoto Masamichi
Mineralogical Institute Graduate School Of Science University Of Tokyo
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Mikouchi Takashi
Mineralogical Institute, Graduate School of Science,University of Tokyo
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