Mass Fractionation of Germanium Isotopes in Canyon Diablo Spheroids

Details Mass Fractionation of Germanium Isotopes in Canyon Diablo Spheroids Mass Fractionation of Germanium Isotopes in Canyon Diablo Spheroids

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1459x&link_type=abstract

Lunar and Planetary Science, volume 27, page 1459

Computer Science

Fractionation: Mass, Germanium: Contents, Germanium: Isotopes, Spheroids

Scientific paper

Canyon Diablo spheroids are enriched in Ge compared to bulk Canyon Diablo. Within the spheroids, Ge is concentrated in the metallic cores and depleted in the oxide shells. The isotopic abundances are normal in the cores but are mass fractionated by ~+4 per mil/AMU in the oxide shells. We infer that most of the Ge in iron-depleted and nickel-enriched melt remains with the metal while a small part of the Ge oxidizes. A portion of that oxidized Ge evaporates, perhaps helped along by the energy liberated during the oxidation of iron, and becomes enriched in heavy Ge isotopes.

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