Computer Science
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000m%26ps...35..457g&link_type=abstract
Meteoritics & Planetary Science, vol. 35, no. 3, pp. 457-466 (2000).
Computer Science
25
Scientific paper
Spherical carbonate globules of similar composition, size, and radial Ca-, Mg- and Fe-zonation to those in Martian meteorite ALH84001 were precipitated from Mg-rich, supersaturated solutions of Ca-Mg-Fe-CO2-H2O at 150(C. The supersaturated solutions (pH ( 6-7) were prepared at room temperature and contained in Teflon(tm)-lined stainless steel vessels, which were sealed and heated to 150(C for 24 hr. Experiments were also conducted at 25(C and no globules comparable to those of ALH84001 were precipitated. Instead, amorphous Fe-rich carbonates were formed after 24 hours and Mg-Fe calcites formed after 96 hours. These experiments suggest a possible low-temperature, inorganic origin for the carbonates in Martian meteorite ALH84001.
Golden D. C.
Lofgren Gary E.
Ming Douglas W.
Morris Richard V.
Schwandt Craig S.
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