Jeff Kuyken wrote: > G'day List,
G'day Down Under, > So just how do you get a specimen like this? > I'm sure someone out there could give a good > answer. I would love to know. I have included > the link below to a page I quickly put together > showing my piece. http://www.meteoritesaustralia.com/features/taza2.html Jeff, if you are referring to your button-shape, 2.84-gram Taza, then my guess is that the word "button" says it all. This absolutely reminds me of the ablation process that Australian tektite buttons with flanges underwent: Scenario 1: 1. a stable, spherical, viscous mass enters the atmosphere, 2. it is is exposed to a high-speed air stream, 3. material ablates away from that part of the meteoroid (the smooth rounded area in #1) which faces the direction of flight towards Earth 4. the wreath-like, broad ring material did not have enough time to flow to the rear surface - maybe already too cool. 5. the warty area in pic #2 represents the rear surface. Scenario 2: 1 - 3 = scenario 1 4. the smooth front surface in #1 consists of a harder material that successfully resisted (further) melting (temperature?) 5. see above Maybe it thought it wanted to be a flanged button and should develop a typical flange :-) Cheers, Bernd ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
