Mathematics – Logic
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..99...14s&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 99, no. 1-2, July 1990, p. 14-28.
Mathematics
Logic
Chondrites, Electron Microscopy, Meteoritic Composition, Phase Transformations, Temperature Dependence, Asteroids, Cobalt, Iron, Metamorphism (Geology), Nickel, Silicates
Scientific paper
Textural, compositional, and mineralogical features of the metal phases in the well-known L6 chondrite Bruderheim are examined in detail. The results demonstrate the very variable composition of the metal grains of this chondrite, which is interpreted as a characteristic inherited at the time of accretion and not eliminated during thermal 'metamorphism' because of the absence of a continuous diffusion path through a network of metal grains. Any equilibration between isolated grains of metal must occur by grain boundary diffusion or by elemental diffusion through the silicate network, probably a very slow process.
Launspach Stephen
Smith Dorian G. W.
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