Identification of clays, quartz and sulfates on the surface of Mars from IRIS Mariner 9 spectra

Details Identification of clays, quartz and sulfates on the surface of Mars from IRIS Mariner 9 spectra Identification of clays, quartz and sulfates on the surface of Mars from IRIS Mariner 9 spectra

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000dps....32.5902f&link_type=abstract

American Astronomical Society, DPS Meeting #32, #59.02; Bulletin of the American Astronomical Society, Vol. 32, p.1113

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Scientific paper

After correction for an instrumental effect, IRIS data can give information on the soil mineralogic composition if one is sure to eliminate, or to take in due account, the properties of atmospheric dust. We have defined 2 parameters, G and D, which allow us to study and classify the spectra. Spectra with G big (and negative), and D close to zero , give us properties of the soil. In this cases (180 spectra out of 21000 of IRIS) we can identify minerals by comparing single spectra (or averages over few cases) with the emissivity measured in the Lab by TES people. Several clays, quartz and sulfates can be identified in the soil in this way, in any case a minority of the 180 spectra.

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