Thermodynamic models of the chemistry of lunar volcanic gases

Details Thermodynamic models of the chemistry of lunar volcanic gases Thermodynamic models of the chemistry of lunar volcanic gases

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.2073f&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Nov. 1991, p. 2073-2076. Research supported by Max-Planck-Institut für C

Physics

7

Chemical Evolution, Gas Composition, Lunar Composition, Thermodynamic Properties, Volcanoes, Abundance, Chemical Composition, Chlorides, Fluorides, Trace Elements

Scientific paper

Thermodynamic models and mass-balance arguments are used to constrain the chemistry of lunar volcanic gases. The results predict that lunar gases were dominated by reduced C and S gases such as CO, COS, CS2, S2. The more oxidized gases CO2 and SO2 were also important, but only in limited temperature ranges. Gases such as Cl2, CCl4, and CF4 were more abundant than HF and HCl, which were the two major H compounds in the lunar gases. Chlorides and fluorides were important species for transporting many volatile and ore-forming metals, and the implications for fractionating and concentrating metals into lunar ore-deposits merit further study.

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