Computer Science
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975gecoa..39..547d&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 39, May 1975, p. 547-557.
Computer Science
21
Carbon Isotopes, Geochemistry, Iron Meteorites, Meteoritic Composition, Chemical Analysis, Fractionation, Graphite, Mass Spectroscopy
Scientific paper
A number of graphite and cohenite samples and taenite separates from iron meteorites were analyzed for carbon isotopic composition, and a series of carbon separates from meteorite silicate inclusions were also studied. Carbon isotopic composition of nodular graphite ranged from -4.8 to -8.2 o/oo vs PDB; that of the cohenite samples ranged from -18.1 to -19.2 o/oo, while carbon of a taenite separate from the same meteorite had a composition of -18.8 o/oo. One possible interpretation for the observed C-13 distribution between graphite, cohenite, and taenite is that it reflects an approach to isotopic equilibrium and is due to the isotopic fractionating properties of the phases involved. In general, the C-13 content of carbon from the silicate inclusions was similar to that for nodular graphite.
Deines Peter
Wickman Frans E.
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