Chemistry of atmosphere-surface interactions on Venus and MarsEarth-based, earth-orbital, and spacecraft observational data are used in the present evaluation of Venus atmosphere-surface interactions to quantitatively characterize the reactions between C, H, S, Cl, F, and N gases and plausible surface minerals. Calculation results are used to predict stable minerals and mineral assemblages on the Venus surface, in order to ascertain which (if any) of the atmospheric gases are buffeted by mineral assemblages. Chemical equilibrium calculations using extant thermodynamic data on scapolite minerals predict that carbonate-bearing scapolite and sulfate meionite are unstable on the surface of Venus, while chloride-bearing scapolite is stable.
Document ID
19920067804
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fegley, Bruce, Jr. (Lunar and Planetary Institute, Houston, TX; Max-Planck-Institut fuer Chemie, Mainz Federal Republic of Germany, United States)
Treiman, Allan H. (NASA Johnson Space Center Houston; Cosmochemistry Research Associates, Inc., Seabrook, TX, United States)