Chromium isotopic anomalies in Allende refractory inclusions

Details Chromium isotopic anomalies in Allende refractory inclusions Chromium isotopic anomalies in Allende refractory inclusions

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11..943b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 11, Oct. 1984, p. 943-946.

Physics

47

Carbonaceous Chondrites, Chromium Isotopes, Inclusions, Meteoritic Composition, Refractory Materials, Anomalies, Nickel Isotopes, Titanium Isotopes, Meteorites, Allende, Chromium, Isotopes, Refractory Elements, Data, Inclusions, Isotopic Ratios, Anomalies, Fractionation, Abundance, Experiments, Procedure, Samples, Meteorite

Scientific paper

Measurements of both 53Cr/52Cr and 54Cr/52Cr ratios with a precision of 10-4 in Allende inclusions display widespread chromium isotopic anomalies which are in the range of 5×10-4. Instrumental mass fractionation precludes specific identification of the affected isotopes, but there are strong arguments favoring excesses in 54Cr and a hint of a very small deficit in 53Cr (≅10-4). These samples also display excesses in 50Ti and no significant effect in nickel isotopes.

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