[meteorite-list] New Sikhote Alin question

[Darren Garrison]

Well, I bought a few more pieces of Sikhote Alin "shrapnel" from the same dealer that sold me the
small oriented individual as cheap shrapnel.  The two other small pieces were also individuals,
though not oriented.  The big piece, though, at 41.6 grams, is more unusual to me (not having
handled much Sikhote Alin.  I don't think it is shrapnel because all edges are to some degree
rounded off, but while it doesn't have an oriented shape, it is covered with deep grooves.  Could
these be some sort of fracturing feature, or are they very deep flow lines?

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