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A spectacular nitrogen isotope anomaly in BencubbinResults 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.
Document ID
19850018258
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Prombo, C. A.
(Chicago Univ. Chicago, IL, United States)
Clayton, R. N.
(Chicago Univ. Chicago, IL, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: Lunar and Planetary Inst. 16th Lunar and Planetary Sci. Conf.
Subject Category
Astrophysics
Accession Number
85N26569
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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