An experimental study of trace element partitioning between olivine, orthopyroxene and melt in chondrules - Equilibrium values and kinetic effects

Details An experimental study of trace element partitioning between olivine, orthopyroxene and melt in chondrules - Equilibrium values and kinetic effects An experimental study of trace element partitioning between olivine, orthopyroxene and melt in chondrules - Equilibrium values and kinetic effects

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993e%26psl.115..177k&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 115, no. 1-4, p. 177-195.

Computer Science

87

Chondrule, Ion Probes, Olivine, Pyroxenes, Trace Elements, Abundance, Metal Ions, Murchison Meteorite, Meteorites, Stony Meteorites, Chondrites, Chondrules, Experiments, Trace Elements, Partitioning, Olivine, Orthopyroxene, Melt, Kinetics, Equilibrium, Major Elements, Minor Elements, Rare Earth Elements, Samples, Meteorite, Laboratory Studies, Microprobe Methods, Concentration, Elements, Glasses, Crystallization, Cooling Rate, Procedure, Texture, Parameters, Minerals, Composition, Crystals, Partition Coeffi

Scientific paper

Mineral/melt partition coefficients were measured using an ion microprobe for 32 elements in orthopyroxene and olivine in equilibrium and dynamic crystallization experiments on compositions corresponding to chondrules. The mineral/melt partition coefficients calculated from the measured concentrations for both olivine and orthopyroxene show very little change between equilibrium experiments and dynamic experiments with cooling rates of up to 100 C/h. The results provide a self-consistent set of partition coefficients that can be used in thermodynamic models of equilibrium and kinetic partitioning between olivine, orthopyroxene, and melt. These data can be used in models of partial melting and crystal fractionation in olivine- and orthopyroxene-rich systems, such as chondrules. The results may also be applicable to mantle peridotites, komatiitic and picritic lavas, and ultramafic intrusions.

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