Navrotsky, Alexandra and Forray, Ferenc Lázár and Drouet, Christophe Jarosite stability on Mars. (2005) Icarus, vol. 1 (n° 1). pp. 250-253. ISSN 0019-1035
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(Document in English)
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Official URL: http://dx.doi.org/10.1016/j.icarus.2005.02.003
Abstract
Jarosite, a potassium (sodium) iron sulphate hydrated mineral, has recently been identified on the martian surface by the Opportunity rover. Using recent thermochemical data [Drouet and Navrotsky, 2003, Geochim. Cosmochim. Acta 67, 2063–2076; Forray et al., 2005, Geochim. Cosmochim. Acta, in press], we calculate the equilibrium decomposition curve of jarosite and show that it is thermodynamically stable under most present martian pressures and temperatures. Its stability makes jarosite potentially useful to retain textural, chemical, and isotopic evidence of past history, including possible biological activity, on Mars.
| Item Type: | Article |
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| Additional Information: | http://www.sciencedirect.com/science/journal/00191035 |
| Audience (journal): | International peer-reviewed journal |
| Uncontrolled Keywords: | |
| Institution: | Other partners > University of California - UC Davis (USA) Université de Toulouse > Institut National Polytechnique de Toulouse - INPT Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS French research institutions > Centre National de la Recherche Scientifique - CNRS |
| Laboratory name: | Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France) - Equipe Physico-Chimie des Phosphates Department of Chemical Engineering and Materials Science (Davis, USA) - Thermochemistry Facility |
| Statistics: | download |
| Deposited By: | Thomas Bonnecarere |
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