Computer Science
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979gecoa..43..673m&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 43, May 1979, p. 673-679, 681-688.
Computer Science
7
Igneous Rocks, Meteoritic Composition, Neutron Activation Analysis, Trace Elements, Iron Oxides, Silicates, Silicon Oxides, Mesosiderites, Howardites, Igneous Rocks, Silicates, Fractionation, Neutron Activation Analysis, Composition, Eucrites, Diogenite, Abundance, Rare Earth Elements, Partitioning, Cumulates, Trace Elements, Melting, Major Elements, Parent Bodies, Cooling, Meteorites
Scientific paper
Neutron activation data are presented for major, minor, and trace elements in whole rock howardites and silicates from mesosiderites. Compositions of howardites and mesosiderites are similar and intermediate between those of eucrites and diogenites. It is indicated that mesosiderites have a higher normative silica component than howardites. It appears that this results partly from a higher content of a highly evolved igneous component and partly from in situ reduction of FeO to Fe followed by magnetic separation of metal prior to analysis. It is shown that light rare earth elements are enriched in some mesosiderites.
Chou Chih-Lung
Mittlefehldt Dave W.
Wasson John T.
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