Solubility of noble gases in serpentine - Implications for meteoritic noble gas abundances

Details Solubility of noble gases in serpentine - Implications for meteoritic noble gas abundances Solubility of noble gases in serpentine - Implications for meteoritic noble gas abundances

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..45..141z&link_type=abstract

Earth and Planetary Science Letters, vol. 45, no. 1, Oct. 1979, p. 141-154.

Other

Abundance, Carbonaceous Chondrites, Meteoritic Composition, Rare Gases, Serpentine, Solubility, Gas Composition, Mass Spectroscopy, Partial Pressure, Tables (Data), Temperature Dependence, Meteorites, Rare Gases, Serpentine, Abundance, Solubility, Experiments, Distribution Coefficients, Carbonaceous Chondrites, Phyllosilicates, Potassium, Argon, Isotopic Ratios, Isotopic Composition, Atmosphere, Dating Techniques, Origin, Minerals, Synthesis, Mass Spectroscopy, Data, Temperatures, Pressure, Models, Element

Scientific paper

An investigation of the solubilities of the noble gases from synthesis and solubility studies of the sheet silicate mineral serpentine in carbonaceous chondrites is presented. Hydrothermal synthesis and exchange experiments were made at 340C and 1 kbar with noble gas partial pressures from 2 times 10 to the -8th power to 0.1 atm. The measured distribution coefficients for noble gases are not sufficiently high to account for the trapped noble gases in carbonaceous chondrites by exchange in solar nebula if meteoritic minerals have comparable distribution coefficients. Also, serpentine gains and loses noble gases to approach equilibrium values with the terrestrial atmosphere, indicating that this exposure may have influenced the noble gas abundances in phyllosilicate minerals of these chondrites. The dispersion of K-Ar ages of carbonaceous chondrites could be the result of phyllosilicates approaching equilibrium solubility of atmospheric Ar-40.

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