Meteoritic magnetite as a cosmothermometer

Details Meteoritic magnetite as a cosmothermometer Meteoritic magnetite as a cosmothermometer

Feb 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974natur.247..531h&link_type=abstract

Nature, Volume 247, Issue 5442, pp. 531-532 (1974).

Physics

Scientific paper

Latimer1 and Urey2 first investigated the oxidation states of iron in the dust phase of the solar nebula, demonstrating for the reaction that the equilibrium constant K = H2/H2O is determined by the relative abundance of hydrogen and oxygen in the solar nebula. The equilibrium constant is further related to the standard free energy change, ΔG°, by the well known thermodynamic relation Thus, with ΔG° obtained from thermodynamic data and K determined by the solar H2/H20 ratio, the equilibrium temperature of ~400 K is calculated.

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