Computer Science
Scientific paper
Mar 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1445t&link_type=abstract
Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 445.
Computer Science
4
Mars Surface, Carbonates, Minerals, Chemical Equilibrium, High Temperature, Meteoritic Composition, Silicates, Sulfides, Magnetite, Calcite, Biogeny, Extraterrestrial Life
Scientific paper
The origin of ellipsoids and patches of carbonate minerals in ALH 84001 is controversial and important because they may contain traces of ancient Martian life. Estimated formation temperatures exceeding 650 C seem inimical to life, but are based on assumptions of chemical equilibria among various carbonate compositions and/or the surrounding silicate minerals. However, the carbonate minerals were not in chemical equilibria among themselves, and were not in chemical equilibria with the surrounding silicate minerals. Thus, these arguments for a high temperature origin are invalid.
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