[meteorite-list] Any clues as to this feature?

[Darren Garrison]

Just won an auction that I've been watching (and probably paid more per gram than I should have, but
I really wanted this one) and I'm wondering if anyone has any insights into this feature.  Look at
the dark area surrounding a "sliver" of material that matches the rest of the matrix.  Could this be
a shock-melt pocket that didn't quite melt all the way to the center?

http://webpages.charter.net/garrison6328/what.jpg