[meteorite-list] Fusion Crust on Irons

[Gary K. Foote]

Hi All,

Recently I have read a few posts to this list that definitively claim that
irons do not form a fusion crust.  Yet, in Norton's "Rocks From Space",
[pg 167 in my softbound edition] it clearly states the following;

"Iron meteorites have the thinnest crust of all, usually only a small
fraction of a millimeter thick.  A fresh crust is blue-black to black and
looks like freshly welded steel.  This crust is fragile and easily
destroyed if the meteorite weathers for even a short time."

So, which is true?  Crust or no crust for irons?

Gary Foote
http://www.meteorite-dealers.com