[meteorite-list] Adam's NWA 2989 Acapulcoite
From: John Birdsell <johnbirdsell_at_meteoritecentral.com>
Date: Tue Feb 14 18:21:14 2006 Message-ID: <20060214232111.86949.qmail_at_web51502.mail.yahoo.com> Hi Bernd...Yes, if it is paired to our new Acapulcoite NWA 2714 and NWA 2656, then the provisional write-up in MB90 states that the TKW is accounted for by a single ~ 7.5 kilogram stone which was apparently broken into pieces and sold. Cheers -John --- bernd.pauli_at_paulinet.de wrote: > Hello All ! > > I've just purchased my 3.7-gram, extremely metal- > and troilite-rich slice > of NWA 2989 (Item #6605571076 - just in case you > care to take a look ;-) > that Adam is offering on EBay. Look at it and you'll > know what I mean! > > Adam writes: > > "...TKW of 77 grams is recorded for NWA 2989. This > weight does > not reflect any pairings since I do not have > accurate figures." > > It is probably paired with NWA 2656, of which I own > a beautiful slice > weighing 0.29 grams. > > Adam also writes: "... the lowest price you will > find on EBay." > > And right he is! I paid $290 for my little, > beautiful NWA 2656 (which I do not > regret!). Go figure and do the maths what I would > have had to pay for more than > 10 times the weight (3.7 grams) of my 0.29-gram > ACAP. > > The specimen that comes closest to the one I > purchased seems to be the 2.55-gram > part slice - also very metal-rich and almost like my > little NWA 2656 with all its > delicate veins and veinlets. It doesn't show those > slender troilite inclusions but > this part slice would be my choice no. 2. I'd buy > both of them if I could afford it! > > What makes acapulcoites, and especially this one, so > interesting is their achondritic, > granular texture and, at the same time, they have an > ordinary chondrite mineralogy. > That's why you find both abundant metal (similar to > H chondrites!) and sulfide in them. > > Another interesting feature is the rare occurrence > of relict chondrules, and, as they do > not plot too far away from both angrites, > brachinites on the one hand, and from ureilites > on the other, you will also find grain boundaries > meeting in triple junctions (120?). > > > Best Acapucoitic wishes, > and Good Night, > > Bernd > > ______________________________________________ > Meteorite-list mailing list > Meteorite-list_at_meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > Received on Tue 14 Feb 2006 06:21:11 PM PST |
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