First presolar silicate discovered in an
Yada T., Stadermann F. J., Floss C., Zinner E., and
Olinger C. T. (2004)
Chondrites and the Protoplanetary Disk, Abstract
#9056, Lunar and Planetary Institute.
The study of presolar grains has given important
information about the isotopic compositions of stellar
matter which has become a building block of our solar
system. Recently, presolar silicates have been discovered in
interplanetary dust particles (IDPs) and meteorites.
Micrometeorites, which are the most dominant
extraterrestrial materials on Earth, have previously been
searched for presolar grains, but no presolar grains have
been discovered yet. Here, we report a newly discovered
presolar silicate phase from an Antarctic micrometeorite