Other
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46.1849e&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 46, Oct. 1982, p. 1849-1861.
Other
15
Chemical Fractionation, Chondrites, Neutron Activation Analysis, Rare Earth Elements, Trace Elements, Abundance, Meteoritic Composition, Radiochemistry, Solar System
Scientific paper
Six C1 chondrite samples and a C2 xenolith from the Plainview H5 chondrite were analyzed by radiochemical neutron activation for a large variety of elements, including rare earths. The sample processing is described, including the irradiation, chemical procedure, rare earths separation, counting techniques, radiochemical purity check, and chemical yields. The results of consistency checks on a number of elements are discussed. Abundances for siderophiles, volatiles, and rare earths are presented and discussed. Tests are presented for fractionation of rare earths and other refractories, compositional uniformity of C1's, and interelement correlations. There is no conclusive evidence for nebular fractionation affecting C1's. Three fractionation-prone rare earths have essentially the same relative abundances in C1's and all other chondrite classes, and hence are apparently not fractionated in C1's.
Anders Edward
Ebihara Mitsuru
Wolf Robert
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