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Jarosite stability on Mars

Navrotsky, Alexandra and Forray, Ferenc Lázár and Drouet, Christophe Jarosite stability on Mars. (2005) Icarus, 1 (1). 250-253. ISSN 0019-1035

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Official URL: http://dx.doi.org/10.1016/j.icarus.2005.02.003


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
Additional Information:http://www.sciencedirect.com/science/journal/00191035
HAL Id:hal-03601625
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 - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Laboratory name:
Deposited On:06 May 2008 11:31

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