Elemental fractionations among enstatite chondrites

Details Elemental fractionations among enstatite chondrites Elemental fractionations among enstatite chondrites

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975gecoa..39..735b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 39, May 1975, p. 735-765.

Computer Science

38

Chondrites, Enstatite, Fractionation, Meteoritic Composition, Neutron Activation Analysis, Abundance, Chemical Analysis, Tables (Data)

Scientific paper

Radiochemical and instrumental neutron activation analysis was employed to determine the abundances of 14 elements in eight enstatite-chondrite falls, while literature data on an additional 28 elements were also used in a study of intragroup elemental fractionations. It was found that (1) siderophilic and chalcophilic element abundances are about 1.5 times greater in E4-5 than in E6 chondrites; (2) nonvolatile lithophile element abundances in E4-5 chondrites are about 1-1.2 times those in E6 chondrites; and (3) highly volatile elements are higher in E4-5 chondrites than in E6 chondrites by factors of 6-50. These fractionation patterns are discussed in terms of a fractionated nebula model.

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