Sulfate minerals from two Mars analogue sites Rio Tinto and Jaroso Ravine, Spain, investigated by Mössbauer and Raman spectroscopy

Details Sulfate minerals from two Mars analogue sites Rio Tinto and Jaroso Ravine, Spain, investigated by Mössbauer and Raman spectroscopy Sulfate minerals from two Mars analogue sites Rio Tinto and Jaroso Ravine, Spain, investigated by Mössbauer and Raman spectroscopy

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..907f&link_type=abstract

European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a

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The MER rovers and the OMEGA instrument onboard Mars Express identified sulfate minerals on the Martian surface. In Meridiani Planum, along the 11 km traverse of the rover Opportunity, jarosite was detected by the Miniaturised Mössbauer spectrometer MIMOS II [1-3] The distribution of jarosite and other Fe-bearing minerals identified by MIMOS II is shown in Figure 1. The identification of sulfates and in particular jarosite provides strong mineralogical evidence that water once flowed through these rocks. The European "ExoMars" rover, which is scheduled for launch in 2013, will carry both a Mössbauer spectrometer and a Raman-LIBS spectrometer. The combination of these techniques will provide definite mineralogical and chemical identification of a great number of surface minerals and in particular of sulfates on Mars. Identification of sulfates with Raman and Mössbauer spectroscopy using samples from potential Martian analogues is an important step in the development of the techniques and the methodology for the mission. In this case, samples from two important potential Martian analogue sites situated in southern Spain were studied, Rio Tinto and Jaroso Ravine.

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