[meteorite-list] Re Cu meteorite

[Darren Garrison]

On Sat, 12 Jul 2008 11:10:04 -0600, you wrote:

>It turns out that even a big block of ice can survive passage through the 
>atmosphere. The outside ablates away, the interior never warms up.

Any numbers on how big the block would have to be?  How small the surviving
piece could be?  I'm thinking of some of those chunks of ice that fall from the
sky some times.  Most come from planes.  Could some be cometary?