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Zinc isotope anomalies in Allende meteorite inclusionsThe isotopic compositions of Zn, Cr, Ti, and Ca have been measured in a number of CAIs from the Allende meteorite. The aim was to test astrophysical models which predict large excesses of Zn-66 to accompany excesses in the neutron-rich isotopes of Ca, Ti, Cr, and Ni. Some of the CAIs show clearly resolved but small excesses for Zn-66 which are at least an order of magnitude smaller than predicted. This result may simply reflect the volatility and chemical behavior of Zn as compared to the other (more refractory) anomalous elements found in these samples. Alternatively, revision of parameters and assumptions used for the model calculations may be required.
Document ID
19900060763
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Loss, R. D.
(Scripps Institution of Oceanography La Jolla, CA, United States)
Lugmair, G. W.
(California, University La Jolla, United States)
Date Acquired
August 14, 2013
Publication Date
September 10, 1990
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 360
ISSN: 0004-637X
Subject Category
Lunar And Planetary Exploration
Accession Number
90A47818
Funding Number(s)
CONTRACT_GRANT: NAG9-49
Distribution Limits
Public
Copyright
Other

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