Heavy elements in the Pantar meteorite
1963; American Geophysical Union; Volume: 68; Issue: 11 Linguagem: Inglês
10.1029/jz068i011p03531
ISSN2156-2202
Autores Tópico(s)Nuclear Physics and Applications
ResumoA determination of the heavy elements, Bi, U, Ba, Ag, and Pd, in the Pantar meteorite has been made. Bismuth appears enriched in the dark fraction (∼8.8 ppb) relative to the light (∼1.6 ppb) by a factor of about 5 to 6. This is consistent with rare-gas enrichment in the darker material and with the fact that Bi, Tl, and Pb and rare gases are considerably more abundant in some types of meteorites, the enstatite and carbonaceous chondrites, than in ordinary chondrites. Some of these elements were determined in two other meteorites, Ensisheim and Lancè. The concentration of Ag in Pantar and Ensisheim is about 33 ppb. Pd concentrations, 0.13 to 0.53 ppm, appear to vary according to the amounts of metal phase in these stones. Some variations in the Ba concentrations are noted.
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