"Exist any iron meteorite without nickel?" none --(so far!)--- and very unlikely. The two elements are so similar; atomic weight, metallic bond, and by physical size of their atoms that there is little way to physically separate them without a heavy planet's gravitational centrifuge. Chemically, here on Earth with free oxygen, iron reacts much more readily than nickel and can precipitated by that means.
Elton ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
