Chemical composition of an unusual xenolith of the Allende meteorite.

Details Chemical composition of an unusual xenolith of the Allende meteorite. Chemical composition of an unusual xenolith of the Allende meteorite.

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989znata..44.1005p&link_type=abstract

Z. Naturforsch., A, Vol. 44a, No. 10, p. 1005 - 1014

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17

Meteorites: Chemical Composition

Scientific paper

The chemical composition of an unusual xenolith (All-AF) from the Allende meteorite was determined by neutron activation and X-ray fluorescence analyses. The xenolith is similar in bulk composition to Allende, but has large excesses in some moderately volatile trace elements, such as Na, K, Au, Sb etc. Some of these elements show considerable variations in other components of Allende, suggesting inhomogeneous distribution in Allende. However, elements of higher volatility, such as Zn and Se have concentrations typical of bulk Allende and other type 3 carbonaceous chondrites. Therefore, All-AF must have formed from the same reservoir as bulk Allende.

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