[meteorite-list] sharp protrusion from an iron meteorite

[Randy Korotev]

I recieved a well prepared letter from a fellow with a question that 
I can't begin to answer.  Maybe someone on the list has seen this 
kind of thing before.

He bought a Baygorria (Iron, IAB complex) from a dealer 3 years ago. 
He picked it up recently to find a metal protrusion sticking out of 
the thing that was sharp enough to prick his thumb.

Here's a jpg of his scanned photo.

http://meteorites.wustl.edu/baygorria.jpg

What's happened here?

Randy Korotev
St. Louis