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Partitioning of rare earth elements between hibonite and melt and implications for nebular condensation of the rare earth elementsThe effect of oxygen fugacity on the partitioning of REEs between hibonite and silicate melt is investigated in hibonite-growth experiments at 1470 C. The experimental procedures and apparatus are described, and the results are presented in extensive tables and graphs and characterized in detail. The absolute activity coefficients in hibonite are estimated as 330 for La, 1200 for Eu(3+), and 24,000 for Yb. It is inferred that ideal solution behavior cannot be assumed when calculating REE condensation temperatures for (Ca, Al)-rich inclusions in carbonaceous chondrites.
Document ID
19880051720
Document Type
Reprint (Version printed in journal)
Authors
Drake, Michael J.
(Arizona Univ. Tucson, AZ, United States)
Boynton, William V.
(Arizona, University Tucson, United States)
Date Acquired
August 13, 2013
Publication Date
March 1, 1988
Publication Information
Publication: Meteoritics
Volume: 23
ISSN: 0026-1114
Subject Category
Lunar And Planetary Exploration
Accession Number
88A38947
Funding Number(s)
CONTRACT_GRANT: NAG9-39
CONTRACT_GRANT: NAG9-37
Distribution Limits
Public
Copyright
Other

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