Thanks, everyone, for their inputs on the effects of heating tektites. My reason for posing the question was that a friend told me about a mineral dealer (in Ventura County, CA, I believe) who was selling heat-treated tektites in a variety of unusual colors. I told my friend that it sounded suspicious to me, but that I wasn't a tektite expert and would ask "The List". Consensus here seems to be that the process of heating up a tektite to white hot and then letting it cool back down produces no major color alterations. However, I need to get back to the friend to find out if these unusual colors were transparent or opaque. If the latter, I suppose it's possible that someone could simply "paint" a tektite (though I question the motives for doing so). But I can't think of a process where you would get, say, a red or blue transparent tektite using a moldavite as your starting point.
Thanks, Rob ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
