Sorry no such content. Moldavites and Georgiasites are chemically very akin to soda glass, essentially identical to the sands they came from with a possible addition of iron from the impactor. Nickel content is below detection thresholds, apparently. Minor content of Na, K, Ca, Mg, Mn, Al and Ti--all typical of river sands. With 3-4% Fe one should think it was the iron but iron should make the glass more yellow if it were a silicate. The valence of the iron +2 or +3 makes a difference in color. There does not appear to be enough Mg to counter balance the iron...So other than knowing it isn't beryilium I don't know specifically, myself. Occums razor it must be the iron in combination with enough soda content.
Chris I see why you offered a beryl guess but coloration , a general rule of thumb in mineralogy is that with rare exception "color" is the least reliable means to make an identification. Remember the yellow and red "moldavites that were hitting ebay a few years ago? Elton ----- Original Message ---- > From: Chris Spratt <cspr...@islandnet.com> > To: meteorite-list@meteoritecentral.com > Sent: Fri, December 10, 2010 1:15:49 PM > Subject: Re: [meteorite-list] Mineral responsible for green color in Moldavite? > > I think it may be a form of Beryilium or Beryl. > > Chris. Spratt > Victoria, BC > ______________________________________________ > Visit the Archives at >http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
