C-anomalous phases in QUE 99177 and MET 00426.

Floss C. and Stadermann F. J. (2008)
Meteorit. Planet. Sci. 43 (7, Suppl.), A44.


ABSTRACT

Carbon-rich phases (e.g., nanodiamonds, SiC, graphite) were the first forms of stardust identified in primitive meteorites and, with the exception of nanodiamonds, are usually present in concentrations of <10- 20 ppm. We have been investigating the stardust inventories of two primitive CR chondrites, QUE 99177 and MET 00426, which have very high abundances of O-anomalous presolar grains. Here we report on the C-bearing presolar phases found in these two meteorites.


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