Chemical weathering on Mars: Rate of oxidation of iron dissolved in brines

Details Chemical weathering on Mars: Rate of oxidation of iron dissolved in brines Chemical weathering on Mars: Rate of oxidation of iron dissolved in brines

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24..231b&link_type=abstract

In Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F p 231-232 (SEE N94-12015 01-91)

Physics

Brines, Iron, Mars Surface, Oxidation, Planetary Geology, Weathering, Ferrous Metals, Minerals, Regolith, Sea Water

Scientific paper

Salts believed to occur in Martian regolith imply that brines occur on Mars, which may have facilitated the oxidation of dissolved Fe(2+) ions after they were released during chemical weathering of basaltic ferromagnesian silicate and iron sulfide minerals. Calculations show that the rate of oxidation of Fe(2+) ions at -35 C in a 6M chloride-sulfate brine that might exist on Mars is about 106 times slower that the oxidation rate of iron in ice-cold terrestrial seawater.

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