Tracer Diffusion of 60Co, 46Sc, 153Gd and 170Tm in Melilite

Details Tracer Diffusion of 60Co, 46Sc, 153Gd and 170Tm in Melilite Tracer Diffusion of 60Co, 46Sc, 153Gd and 170Tm in Melilite

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..907m&link_type=abstract

Lunar and Planetary Science, volume 27, page 907

Physics

Diffusion Coefficient, Diffusion: Tracer, Melilite

Scientific paper

Diffusivities of radioactive tracers, 60Co, 46Sc, 153Gd. and 170Tm, in synthetic gehlenite (Ca2Al2SiO7) and akermanite (Ca2MgSi2O7), two end-members of melilite have been measured. In this work 60Co is used as a substitute for a Mg isotope, and 46Sc, 153Gd and 170Tm are used as representatives of the rare earth elements (REE). Diffusivities of Mg isotopes and REE in melilite, when combined with the distributions of these isotopes and elements in the Ca, Al-rich inclusion (CAI) in the carbonaceous meteorites, may provide important information on the origin of CAI's.

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