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Search for Al-26 effects in the Allende FUN inclusion C1The Mg isotopic composition of major and minor mineral phases in the Allende inclusion C1 is reported. The results are analyzed in order to establish whether the Mg isotopic composition is the same in different phases and whether Al-26 is present in a sample which exhibited fractionation and unknown nuclear (FUN) effects on other elements. It is found that a small Mg-26 excess exists in C1 and is correlated with the Al-27/Mg-24 ratio, indicating that Al-26 was present in C1 together with the more general nuclear anomalies. The results also reveal that isotopic homogeneity of Mg in Mg-rich phases in C1 is evident in both bulk samples and single microscopic crystals.
Document ID
19780068429
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Esat, T. M.
(California Inst. of Tech. Pasadena, CA, United States)
Lee, T.
(California Inst. of Tech. Pasadena, CA, United States)
Papanastassiou, D. A.
(California Inst. of Tech. Pasadena, CA, United States)
Wasserburg, G. J.
(California Institute of Technology Pasadena, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1978
Publication Information
Publication: Geophysical Research Letters
Volume: 5
Subject Category
Lunar And Planetary Exploration
Accession Number
78A52338
Funding Number(s)
CONTRACT_GRANT: NSF 76-83685
CONTRACT_GRANT: NGL-05-002-188
Distribution Limits
Public
Copyright
Other

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