Additional information from a Scientific American link that says that
the meteorite is not from Vesta, because the orbit is wrong, and the
oxygen isotopes are different.
http://www.scientificamerican.com/blog/60-second-science/post.cfm?id=recovered-meteorite-points-to-an-un-2009-09-17
Well, oxygen isotopes are one thing, but orbital data would seem to be
a strange way to classify a meteorite to me; given the past four and a
half billion years of collisions, things have been far too 'messed up'
in the inner solar system for that to mean much; we have comets
present in stable
After all, Ibitira's a Eucrite, but NWA 011's an ungrouped
achondrite. It's the chemical difference that seems to make the
difference in nomenclature.
Jason
So Jason,
I guess we can both agree that Bunburra Rockhole is a Eucrite, and
that most Eucrites, but not all, come from Vesta.
Mike
I don't think there's a difference between any of these meteorites in
terms of what we should call them. We just don't have consistent
terminology in place. Ibitira, NWA 011, and, it appears, Bunburra
Rockhole are all basaltic achondrites that seem to come from a separate
parent body than
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