Hi, Obsidians have hundreds to thousands of times more water in them than tektites. Heat obsidian in a vacuum and watch it bubble away like crazy. Tektites basically just sit there when heated; there's nothing to outgas. On the other hand, the furnaces are hard to carry to shows, there's no 440 V. lines available, etc., etc. But it's a positive test.
Sterling K. Webb ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list