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Auger analysis of presolar silicates in Acfer 094 &
the discovery of a presolar CAI.
Vollmer C., Stadermann F. J., Bose M., Floss C., Hoppe P., and
Brenker F. E. (2007)
Meteorit. Planet. Sci. 42 (8, Suppl.), A158.
ABSTRACT
Mineralogical characterization of presolar silicates is an
analytical challenge due to their small size (usually <0.5 µm)
and surrounding "normal" silicates. However, such investigations are
crucial in understanding formation histories of these grains.
Transmission electron microscopy (TEM) is typically the method of
choice, but preparation of electron transparent lamellae from
meteoritic grains is a difficult and time consuming task. Auger
spectroscopy provides a promising analytical alternative: elemental
information of sub- m sized grains can be obtained with ~10-20 nm
resolution without elaborate sample preparation. Here we report on
Auger spectroscopy results of presolar silicates in Acfer 094.
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