Physics
Scientific paper
Oct 1962
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1962gecoa..26.1011a&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 26, Issue 10, pp.1011-1022
Physics
4
Scientific paper
The abundances of tungsten in 17 chondrites, 6 achondrites, 5 siderites, one sample of meteoritic olivine, one sample of meteoritic troilite, 5 types of tektites, one meteoritic impact glass, 3 obsidians, 4 samples of a deep-sea sediment core, and 2 standard rocks have been determined by means of neutron activation analysis. A cosmic atomic abundance for tungsten of 0.11 ( Si = 10 6 ) has been calculated on the basis of the chondrite analyses. This value is lower than the interpolated value of Suess and Urey (1956) and slightly lower than the calculated value of and (1961). It is, however, in good agreement with the calculated value of (1959) and the recent experimental measurements of and (1960) on 5 chondrites. Information on the geochemical distribution of tungsten in separated meteoritic phases and certain terrestrial rocks has been obtained. Some implications of the data to theories of nucleosynthesis and meteorite formation are discussed.
Amiruddin A.
Ehmann William D.
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