Primary fractionation of elements among iron meteorites

Details Primary fractionation of elements among iron meteorites Primary fractionation of elements among iron meteorites

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978gecoa..42.1447s&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 42, Sept. 1978, p. 1447-1458. Research supported by the Natural Environment Research Coun

Computer Science

4

Fractionation, Iron Meteorites, Meteoritic Composition, Abundance, Analytical Chemistry, Chemical Composition, Concentration (Composition), Condensation, Gallium, Germanium, Graphs (Charts), Nebulae, Trace Elements, Fractionation, Iron Meteorites, Germane, Chondrite, Concentrations, Element Ratios, Abundances, Condensation, Refractory Elements, Solar Nebula, Equilibrium, Siderophile Elements, Nickel, Gallium, Germanium, Neutron Activation Analysis, Anomalous Iron Meteorites

Scientific paper

The relative abundances of various elements normalized to Ni were plotted against Ga abundance on the basis of the results of recent instrumental neutron activation analyses of 22 low-Ge irons. Mean abundances of Co, P, Au, As, Cu, Ge, and Zn in the iron meteorite groups and anomalous irons are generally between 1 and 0.00001 and are positively correlated with Ga. Mean abundances of refractory elements are generally between 0.5 and 2, and with the possible exception of W are uncorrelated with Ga. The mean gradients of the primary fractionation curves on element-Ga abundance diagrams increase in approximately the same order in which, according to Wai and Wasson (1977), these elements condensed into Fe, Ni grains during equilibrium nebular condensation.

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