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The parameterization of solid metal-liquid metal partitioning of siderophile elements
- Source :
- Meteoritics & Planetary Science. 38:1425-1436
- Publication Year :
- 2003
- Publisher :
- Wiley, 2003.
-
Abstract
- Many solar system processes involve a metallic liquid, and the composition of the metallic liquid, such as the liquid's concentrations of S, P, and C, will influence the partitioning of elements during such processes. We present a method for parameterizing solid metal-liquid metal partition coefficients for siderophile (metal-loving) elements as a function of the metallic liquid composition. Our parameterization method is based on an older theory of Jones and Malvin (1990), which stated that the metallic liquid is composed of metal and non-metal-bearing domains, and the domains are the dominant influence on the partitioning behavior. By revising the means by which the metal domains are calculated, our revised parameterization method is able to match experimental partitioning data from the Fe-Ni-S, Fe-Ni-P, Fe-Ni-S-P, and Fe-Ni-C systems. Mathematical expressions were derived for the solid metal-liquid metal partitioning of 13 siderophile elements. Elements that are chalcophile (S-loving), P-loving, or C-loving prefer the non-metal-bearing domains in the metallic liquid and, consequently, aren't fit by the parameterization method presented here. Possible applications for our parameterization method include modeling the crystallization of iron meteorites, planetary differentiation, and the solidification of Earth's inner core.
- Subjects :
- Liquid metal
Chemistry
Inner core
Thermodynamics
Mineralogy
Henry's law
law.invention
Metal
Partition coefficient
Geophysics
Space and Planetary Science
law
visual_art
visual_art.visual_art_medium
Condensed Matter::Strongly Correlated Electrons
Crystallization
Earth (classical element)
Planetary differentiation
Subjects
Details
- ISSN :
- 19455100 and 10869379
- Volume :
- 38
- Database :
- OpenAIRE
- Journal :
- Meteoritics & Planetary Science
- Accession number :
- edsair.doi...........8128753f9f2110f859685af5eeb954aa