Anne wrote: > Vincent's Gibeon is amazing!
Hello Anne and List, I agree and so is yours, Anne! > I picked up another odd one in Tucson. It looks as if it was made of > 3 different pieces: 2 have nice Widmanstatten patterns, but oriented > differently, and then there is wedge-shape piece with no pattern at > all. It is now on my site: > www.impactika.com/meteorites/gibeonslice.html > How do you explain that one? I wish I could and I have been waiting here for someone like Eric or Ron to jump in. Let's start with the easier part of the affair: the two Widmanst�tten patterns which are oriented differently and that Gibeon slices are so famous for. They represent 2 original taenite grain bound- aries. A slice with a diameter of about 50 cm may show up to 9 different taenite grain boundaries and thus as many different orientations of the Widmanst�tten pattern. As for this wedge-shape piece with no pattern at all, I can only guess that it is a severely heated, melted, and recrystallized inclusion or it might be a plessitic field. Best wishes and ... waiting for other list members' comments! Bernd ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
