The petrogenesis of L-6 chondrites - Insights from the chemistry of minerals

Details The petrogenesis of L-6 chondrites - Insights from the chemistry of minerals The petrogenesis of L-6 chondrites - Insights from the chemistry of minerals

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979gecoa..43.1091c&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 43, July 1979, p. 1091-1103.

Computer Science

8

Abundance, Chondrites, Feldspars, Meteoritic Composition, Minerals, Cesium, Nickel, Pyroxenes, Sodium, Trace Elements, Meteorites, L6 Chondrites, Petrogenesis, Chemistry, Mineralogy, Data, Major Elements, Minor Elements, Trace Elements, Concentrations, Models, Alfianello Meteorite, Colby Meteorite, Leedey Meteorite, Composition, Rare Earth Elements, Cobalt, Nickel, Abundance, Distribution, Phases, Temperatures, Olivines, Clinopyroxene, Fractionation, Alkalies, Rubidium, Sodium, Cesium, Feldspar, Orthopyroxe

Scientific paper

Measurements of the major, minor and trace element abundances of the major minerals of the L-6 chondrites Alfianello, Colby (WI) and Leedey are used to investigate the formation mechanisms of L-6 chondrites. Electron microprobe analysis was performed on individual grains of each mineral, and separated minerals were analyzed by instrumental and radiochemical neutron activation analysis. The compositions of the three meteorites are observed to be generally uniform, however different abundances and distributions of rare earth elements and Co and Ni indicate that the meteorites have different petrogenetic histories. Alkali element distributions are found to be incompatible with internal equilibration of a closed system.

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