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Experimental determination of the solubility of iridium in silicate melts: Preliminary results
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Author and Affiliation:
Borisov, Alexander(Academy of Sciences (USSR), Moscow., United States)
Dingwell, Donald B.(Bayreuth Univ., Germany, F.R. , United States)
Oneill, Hugh ST.C.(Bayreuth Univ., Germany, F.R. , United States)
Palme, Herbert(Max-Planck-Inst. fuer Chemie, Mainz, Germany, F.R. , United States)
Abstract: Little is known of the geochemical behavior of iridium. Normally this element is taken to be chalcophile and/or siderophile so that during planetary differentiation processes, e.g., core formation, iridium is extracted from silicate phases into metallic phases. Experimental determination of the metal/silicate partition coefficient of iridium is difficult simply because it is so large. Also there are no data on the solubility behavior of iridium in silicate melts. With information on the solubility of iridium in silicate melts it is possible, in combination with experimental data for Fe-Ir alloys, to calculate the partition coefficient between a metallic phase and a silicate melt.
Publication Date: Jan 01, 1992
Document ID:
19920019348
(Acquired Nov 07, 1995)
Accession Number: 92N28591
Subject Category: GEOPHYSICS
Coverage: Abstract Only
Document Type: Conference Paper
Publication Information: Lunar and Planetary Inst., Workshop on the Physics and Chemistry of Magma Oceans from 1 Bar to 4 Mbar; p 15-16
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Academy of Sciences (USSR); Inst. of Geochemistry.; Moscow, Ussr
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: CHEMICAL COMPOSITION; IRIDIUM; MELTS (CRYSTAL GROWTH); SILICATES; SOLUBILITY; GEOCHEMISTRY; PLANETARY EVOLUTION
Imprint And Other Notes: In Lunar and Planetary Inst., Workshop on the Physics and Chemistry of Magma Oceans from 1 Bar to 4 Mbar p 15-16 (SEE N92-28587 19-46)
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