Chemical and isotopic constraints on the formation and crystallization of SA-1, a basaltic Allende plagioclase-olivine inclusion

Details Chemical and isotopic constraints on the formation and crystallization of SA-1, a basaltic Allende plagioclase-olivine inclusion Chemical and isotopic constraints on the formation and crystallization of SA-1, a basaltic Allende plagioclase-olivine inclusion

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992metic..27..539k&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 27, no. 5, p. 539-554.

Mathematics

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10

Allende Meteorite, Basalt, Crystallization, Magnesium Isotopes, Meteoritic Composition, Olivine, Ilmenite, Mineralogy, Nepheline, Petrology, Pyroxenes, Rare Earth Elements

Scientific paper

Results are presented of a detailed petrologic, chemical, and Mg-isotope study of SA-1, a basaltic Allende plagioclase-olivine inclusion. The chemical and isotopic data were used to identify the signatures of nebular vs. planetary processes and to determine if SA-1 contains a component produced by planetary differentiation. It was found that the results of major-element and trace-element abundances in SA-1 are inconsistent with its formation as a mixture of nebular materials. It is suggested that SA-1 contains a chemically fractionated component produced by igneous differentiation.

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