Enstatite chondrites - Trace element clues to their origin

Details Enstatite chondrites - Trace element clues to their origin Enstatite chondrites - Trace element clues to their origin

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47.2241h&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 47, Dec. 1983, p. 2241-2255.

Computer Science

17

Chondrites, Enstatite, Meteoritic Composition, Trace Elements, Abundance, Evolution (Development), Factor Analysis, Refractory Materials

Scientific paper

Three EH and three EL chondrites have been subjected to RNAA analysis for 20 trace elements, and interelement correlations were examined in order to assess the effects of nebular fractionation and metamorphism. The refractory siderophiles Ir, Os, and Re correlate with the normal siderophiles Ni, Pd, Au, Sb, and Ge, in ELs but not in EHs. The two element groups presumably condensed on separate phases at first, but concentrated in metal during metabolism. Volatiles are consistently more depleted in ELs than EHs. Strong correlations are found for In-Tl, Tl-Bi, and Zn-Cd-In, which are equally consistent with predicted condensation curves for the solar nebula and with volatilization curves for artificially heated Abee. The three factors accounting for 93 percent of variance reflect volatile, siderophile, and chalcophile behavior.

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