[meteorite-list] Re: CV metachondrite pairings

From: Adam Hupe <raremeteorites_at_meteoritecentral.com>
Date: Sat May 20 19:32:11 2006
Message-ID: <02ff01c67c65$8cb74540$6401a8c0_at_c1720188a>

First of all, thank you for finally contacting the scientists and reporting
your findings.

David Weir wrote:

In a prior post I stated that I thought the probabilities would be
vanishingly small (although not zero) to find two unpaired, CV
metachondrites, with overlapping mineralogy and chemistry, at the same
proximity and time.

My response is:

Nobody knows what proximity they were found and they were classified at
different times. They came for two different sources, we do not purchase
material from Aziz. Who says both are related to the CV parent body? COs
plot slightly different.

David Weir wrote:

Now I would like to take this opportunity to acknowledge my gratitude and
friendship to Aziz Habibi for gifting me almost a gram of NWA011/2400
(that's 1000 x what I have!), which will now become the official
representative specimen of this probably extinct asteroid on my website.
Many thanks Aziz!

My response is:

How could it be official when it has not been studied and no nomenclature
has been given to this piece? This is the same kind of proclamation that
causes problems and lengthy debates.

Feeling a little vindicated after being called a liar,

Adam





----- Original Message -----
From: "David Weir" <dgweir_at_earthlink.net>
To: <meteorite-list_at_meteoritecentral.com>
Cc: "Adam Hupe" <raremeteorites_at_comcast.net>; "Ted Bunch"
<tbear1_at_cableone.net>
Sent: Saturday, May 20, 2006 9:22 AM
Subject: CV metachondrite pairings


> Adam Hupe wrote:
>
> > By the way, It has been cleared with both Dr. Irving and Dr. Bunch for
you
> > to contact them in regards to previous statements you made that are in
> > error.
>
> Yesterday I had a conversation with Ted Bunch as you suggested, and he
> will inform webmaster Wittke of the incorrect statement on the NAU
> website that expresses a pairing of NWA 3133 with NWA 1839. From the
> maintainence of my website, which contains almost a quarter of a million
> words that change regularly according to ongoing research results, I can
> empathize with his and Dr. Wittke's efforts to keep an up-to-date
> website and also do his teaching, research, and publishing, not to
> mention maintaining a family life. I am most grateful for their
> excellent website.
>
> http://www4.nau.edu/microanalysis/Microprobe/Probe.html
>
> In a prior post I stated that I thought the probabilities would be
> vanishingly small (although not zero) to find two unpaired, CV
> metachondrites, with overlapping mineralogy and chemistry, at the same
> proximity and time. Apparently I should buy a lottery ticket. These two
> meteorites have taken convoluted classification paths, both originally
> "listed" as L7 according to Ted, then NWA 3133 was determined to be a CV
> metachondrite and was eventually classified as an ungrouped primitive
> achondrite. I suspect it will eventually be reclassified as CV
> metachondrite consistent with what is presented on the NAU website. NWA
> 1839 never made the official transition from L7 to ungrouped PAC, but it
> too will probably eventually get a CV metachondrite label as it is
> presently recognized on the NAU website.
>
> Ted said that these two CV metachondrites have different O-isotope plots
> along the CV mixing line and thus are not paired. I have updated my
> website where necessary. So now the big pairing mystery seems to be
> cleared up, and we have TWO new CV metachondrites to expand our
> knowledge base. Nice!
>
> Now I would like to take this opportunity to acknowledge my gratitude
> and friendship to Aziz Habibi for gifting me almost a gram of
> NWA011/2400 (that's 1000 x what I have!), which will now become the
> official representative specimen of this probably extinct asteroid on my
> website. Many thanks Aziz!
>
> David
Received on Sat 20 May 2006 07:31:41 PM PDT