Mössbauer studies of Jarosite, Mikasaite and Yavapaiite, and implication to their Martian counterparts |
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| Authors: | Kiyoshi Nomura Masuo Takeda Takeshi Iiyama Hitoshi Sakai |
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| Institution: | (1) School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-8656, Japan;(2) Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi Chiba, 274-8510, Japan;(3) Okayama University, Okayama, Japan |
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| Abstract: | In order to confirm Mössbauer spectra of Jarosite, unidentified Fe3+ species (Fe3D3) and Fe2O3 found on Martian surface, some Jarosite specimens produced on Earth were characterized by 57Fe Mössbauer spectroscopy. For comparison, anhydrous ferric sulfate minerals, Mikasaite (Fe3+ 1.56Al0.44)(SO4)3, and Yavapaiite, KFe (SO4)2 were also measured. The thermal decomposition products of Jarosite and their hydration products were also traced by scattering Mössbauer spectra (CEMS and XMS). These data are useful for the identification of hydrous and anhydrous ferric sulfate phases on Mars, including Fe3D3. |
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| Keywords: | M?ssbauer spectra CEMS XMS Jarosite thermal decomposition hydration Mars |
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