The solar-system abundances of Nb, Ta, and Y, and the relative abundances of refractory lithophile elements in differentiated planetary bodies

Details The solar-system abundances of Nb, Ta, and Y, and the relative abundances of refractory lithophile elements in differentiated planetary bodies The solar-system abundances of Nb, Ta, and Y, and the relative abundances of refractory lithophile elements in differentiated planetary bodies

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50.1173j&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 50, June 1986, p. 1173-1183.

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27

Abundance, Carbonaceous Chondrites, Niobium, Planetary Evolution, Refractory Materials, Tantalum, Yttrium, Chemical Fractionation, Mass Spectroscopy, Meteoritic Composition, Neutron Activation Analysis, Silicates, Solar System, Meteorites, Solar System, Abundance, Refractory Elements, Lithophiles, Niobium, Tantalum, Yttrium, Stony Meteorites, Carbonaceous Chondrites, Samples, Meteorite, Mass Spectrometry, Ssms, Neutron Activation Analysis, Rnaa, Hafnium, Zirconium, Rare Earth Elements, Ci Chondrites, Data,

Scientific paper

New abundance data have been obtained for Nb, Ta, Y, and Ho in carbonaceous chondrites, using spark source mass spectrometry and RNNA. From these data and earlier literature data on the C1-chondrite Orgueil, a consistent set of solar-system abundances has been derived for Nb, Y, Zr, Ta, Hf, and the rare-earth elements. Constant ratios among these elements were found in all groups of carbonaceous chondrites. The available evidence suggests that refractory lithophilic elements in the earth, the moon, and achondritic meteorites occur in the same proportions as in carbonaceous chondrites. The same pattern of refractory lithophile elements in chondrites and planets indicates that protoplanetary materials have never been subject to high-temperature processes that would fractionate refractory elements from each other.

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