Totally agreed Rob. As someone who collects primitive chondrites, I can say that there are heaps of examples you might think are Type-3 but turn out to be 4's. You absolutely need a thin section to tell with 100% certainty.
Cheers, Jeff -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rob Matson Sent: Friday, 7 June 2013 4:19 PM To: 'William Feek'; [email protected] Subject: Re: [meteorite-list] WANTED: small unclassified type 3's Hi William, > Michael, No need to get all anal about the verbage, this ain't a Supreme Court hearing. > I guess I could have inserted the word "possible", maybe even used the word "potential", > but thankfully there's reasonable people who've displayed the capability of understanding > what I was getting at without the use of crystal clear lawyer speak such as what's written > in a software User Agreement. Go ahead and critique every line and word that I wrote, > I'll be the first to agree that it's probably wrought with problems, but I'm not going to > rewrite it, nor am I going to take draft's of future documents to the english department > of the nearest college for correction before posting. You're being overly reactionary in your reply to Michael. He raised a perfectly valid point: there is absolutely no way you can determine with confidence that an uncut meteorite (especially from NWA) is unequilibrated (type-3). > By the way, I can tell the difference between a Murchison and NWA 2086, and would > you beleive I can do so without the use of analysis. That is a completely different matter. > Similarly, there just so happens to be the existence of some stones which can be > determined to be type 3 without the use of analysis ... No -- not "similarly." William, you need to be disabused of this notion, unless your "some stones" is extremely restrictive. > ... so you mean to tell me that you'd have trouble being able to tell if a stone > such as Begga was a type 3 or not without the use of analysis? YES, ABSOLUTELY, if that stone is uncut. No meteoriticist would ever claim an uncut stone was unequilibrated without seeing a thin section. Cheers, Rob ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
