Composition and origin of clasts and inclusions in the Abee enstatite chondrite breccia

Details Composition and origin of clasts and inclusions in the Abee enstatite chondrite breccia Composition and origin of clasts and inclusions in the Abee enstatite chondrite breccia

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983e%26psl..62..180s&link_type=abstract

Earth and Planetary Science Letters, vol. 62, no. 1, Jan. 1983, p. 180-192.

Mathematics

Logic

15

Breccia, Chondrites, Enstatite, Inclusions, Meteoritic Composition, Abundance, Chemical Composition, Evolution (Development), Manganese, Mineralogy, Neutron Activation Analysis, Rare Earth Elements, Refractory Metals, Scandium, Vanadium, Meteorites, Composition, Origin, Clasts, Inclusions, Abee Meteorite, Enstatites, E4 Chondrites, Breccia, Samples, Meteorite, Concentration, Major Elements, Minor Elements, Trace Elements, Inclusions, Enrichment, Metals, Refractory Elements, Siderophiles, Patterns, Formation

Scientific paper

Element concentrations are determined for four clasts, a metal-rich inclusion and two dark, metal-poor inclusions from the Abee enstatite chondrite. The data obtained suggest that there are two generations of metal, one with low and the other with high concentrations of refractory siderophiles. The other elemental patterns may be understood in terms of major mineral abundance variations. It is inferred that Sc and Mn are mostly located in the niningerite, V in the troilite, and rare earth elements in the oldhamite. Although shock processes in a regolith setting remain a possibility, if they were followed by a period of metamorphism sufficiently long to erase petrologic evidence, heterogeneities among the clasts are thought to be primary, and due to the accretion-agglomeration process.

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