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The distribution of inclusions in a single large presolar
silicon carbide grain.
Stadermann F. J., Stephan T., Lea A. S., and
Floss C. (2006)
Meteorit. Planet. Sci. 41 (8, Suppl.), A166.
ABSTRACT
The Murchison LS+LU presolar grain separation fraction
contains large SiC grains with sizes above 2 µm. A previous study
of this SiC size fraction found two morphological types: irregular to
round grains and blocky grains with flat surfaces. We have performed
detailed elemental and isotopic characterizations of a single 15
µm x 20 µm SiC grain of the latter type. We used
complementary imaging techniques of SEM, NanoSIMS, ToF-SIMS, and Auger
spectroscopy to determine the types and distributions of various
inclusions in this unusually large SiC grain.
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