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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, Abstract
#5338.
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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