I heated an indochinite once, to see if it would melt and it shattered!! luckily I was wearing safety glasses!! So be carefull. If you're going to melt one I advise crushing it into to crumbs/powder first. I guess the fact that it shatters implies it originally cooled very quickly, and the 'glass' must have been under considerable stress/tension, so this may offer some clue on how they formed and cooled, but then maybe just the small ones cooled fast? A thin section of tektite put under polarized filter would be interesting, since you would see the stress lines as colours would you not? A similar technique used to check sheet glass and plastic for area's of stress. Mark Ford ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
