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Re: Ninqiang classification - Is this your final answer?
- To: MARSROX@aol.com, meteorite-list@meteoritecentral.com
- Subject: Re: Ninqiang classification - Is this your final answer?
- From: Alexander Seidel <ase@planet-interkom.de>
- Date: Wed, 24 Nov 1999 18:52:24 +0100
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- Resent-Date: Wed, 24 Nov 1999 13:09:10 -0500 (EST)
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MARSROX@aol.com wrote:
>
> A couple of days ago Matt Morgan announced his sale of a few fragments of
> Ninqiang, a carbonaceous chondrite that fell in China on June 25, 1983. I
> was able to buy some of this a couple of years ago from the Philip's Auction.
> I'd encourage anyone who would like one of the rarest, freshest, interesting
> and beautiful (eye of the beholder, of course) carb chondrites in existance
> to see if he still has any for sale. It's not cheap, but it is unique.
>
> The question is - what is it? Matt mentions that it's a CK4, I bought it
> labeled a CK-Anom. It shows in the literature as a CK3 - Anom.(Scherer, Met
> 32-4, 1997) a CV (Kallemeyn, Rubin Met 22,4 (1987), a CV3 (Guimon, Met 30-6,
> 1995 & Lin Y. & Kimura M. Met. 33-3, 1998) and a CV4 (Koberl, Ntaflos, Lunar
> Pl. Sci 18, 1987).
Hello Kevin and List,
My licensed copy of "MetBase V4.0" [(c) Joern Koblitz, 1994-1999]
lists it as a "C3-UNGR", i.e. an ungrouped carbonaceous chondrite of
petrological type 3. I add two significant extracts, regarding your
question, from the descriptions and references section of the database:
"...Although most similar to CK chondrites, chemical composition, TL and
oxygen isotope data do not support such a classification, it should best
left as ungrouped, G.W.Kallemeyn, LPSC, 1996, 27, p.635 (abs.)."
"...Trace element pattern and oxygen isotopic composition, similar in
petrology, oxygen isotopes and TL properties to oxidized CV3 chondrites,
M.K.Weisberg et al., Meteorit. Planet. Sci., 1996, 31, p.A150 (abs.)."
Best regards,
Alex
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Alexander Seidel My location on planet Earth
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