A spectacular nitrogen isotope anomaly in Bencubbin

Details A spectacular nitrogen isotope anomaly in Bencubbin A spectacular nitrogen isotope anomaly in Bencubbin

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgrs...90...71p&link_type=abstract

In Lunar and Planetary Inst. 16th Lunar and Planetary Sci. Conf. p 71-73 (SEE N85-26548 15-91)

Computer Science

Anomalies, Meteoritic Composition, Nitrogen Isotopes, Stony-Iron Meteorites, Abundance, Cosmochemistry, Isotopic Enrichment, Nuclear Transformations, Solar System

Scientific paper

Results of isotopic measurements on an unusual stony-iron meteorite named Bencubbin, which was found in Western Australia in 1930, are reported. Nitrogen from both the metallic and stony parts of the Bencubbin meteorite was analyzed, and in both materials large excesses of (15)N were found, resulting in values of the (14)N/(15)N abundance ratios as low as 137. That is, (15)N is enriched in Bencubbin by about a factor of two relative to terrestrial nitrogen. This is the largest (15)N enrichment of any known natural material. The effect is so large that chemical processes are probably inadequate to account for it. Nuclear processes which may be responsible for the anomalous isotope abundance are discussed.

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