H-chondrites - Trace element clues to their origin

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

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49..247m&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 49, Jan. 1985, p. 247-259.

Mathematics

Logic

12

Chondrites, Meteoritic Composition, Trace Elements, Chemical Composition, Factor Analysis, Metals, Mineralogy, Neutron Activation Analysis, Petrology, Radiochemistry, Volatility, Meteorites, H Chondrites, Trace Elements, Origin, Samples, Meteorite, Analysis, Neutron Activation Analysis, Rnaa, Petrology, Depletion, Siderophiles, Composition, Abundance, Fractionation, Classification, Rare Earth Elements, Metamorphism, Volatiles, Comparisons, Mineralogy, Formation, Accretion, Alkalis, Data, Parent Bodies

Scientific paper

RNAA is used to determine the abundances of 20 trace elements in four H4, two H3, two H5, and two H6 chondrites from the British Museum, as a contribution to a multiple-method study of these objects. The results are presented in tables and graphs and analyzed in terms of the inhomogeneity of the parent bodies and the depletion of volatiles in the higher petrologic types. Features observed include siderophile depletion in H3 chondrites; systematic variation of siderophile abundance pattern with petrologic type; volatile depletion as a primary feature; mineralogy consistent with accretion at 420-500 K; and the factor-analysis groupings siderophiles (Os, Re, Ir, Ni, Pd, Au, and Ge), volatiles (Ag, Br, In, Cd, Bi, and Tl), and alkalis (Rb and Cs).

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