Allende xenolith AF: undisturbed record of condensation and aggregation of matter in the solar nebula.

Details Allende xenolith AF: undisturbed record of condensation and aggregation of matter in the solar nebula. Allende xenolith AF: undisturbed record of condensation and aggregation of matter in the solar nebula.

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989znata..44..988k&link_type=abstract

Z. Naturforsch., A, Vol. 44a, No. 10, p. 988 - 1004

Computer Science

26

Meteorites: Olivine, Meteorites: Solar Nebula

Scientific paper

In this paper an unusual, cm-sized xenolith from the Allende meteorite is described. Xenolith Allende-AF (All-AF) is chemically similar to bulk Allende, its texture is, however, completely different. It consists mainly of highly porous silicate-rich aggregates embedded in a largely opaque matrix. Occasionally olivine-sulfide-metal aggregates and large sulfide-andradite objects are found. Chondrules are absent and grain size in matrix and aggregates is the same, quite different from normal Allende. It appears that All-AF has preserved a unique record of condensation, hierarchical aggregation, and metasomatic exchange reactions in the solar nebula.

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