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Trace element partitioning between taenite and kamacite - Relationship to the cooling rates of iron meteoritesInstrumental neutron activation analysis (INAA) was used to determine Ni, Co, Cu, Ga, As, Au, W, Re and Ir in taenite lamellae isolated by acid dissolution from eight iron meteorites from groups IA, IIIAB and IVA. Taenite is enriched in Ni, Cu, Ga, As, Au, W, Re and Ir relative to kamacite, whereas taenite is depleted in Co. Taenite/kamacite partition ratios in slowly cooled IAB meteorites are farther from unity than those in rapidly cooled IVA meteorites. Taenite/kamacite partition ratios for Cu, Ir, Au and Co may be sensitive cooling rate indicators.
Document ID
19880067950
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rasmussen, Kaare L.
(California, University Los Angeles; Copenhagen, University, Denmark)
Malvin, Daniel J.
(California, University Los Angeles; Arizona, University, Tucson, United States)
Wasson, John T.
(California, University Los Angeles, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1988
Publication Information
Publication: Meteoritics
Volume: 23
ISSN: 0026-1114
Subject Category
Lunar And Planetary Exploration
Accession Number
88A55177
Funding Number(s)
CONTRACT_GRANT: NAG9-40
CONTRACT_GRANT: SNFO-11-5885
Distribution Limits
Public
Copyright
Other

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