[meteorite-list] LA 001 & Ibitiri Thin Sections (Ad)

From: Michael L Blood <mlblood_at_meteoritecentral.com>
Date: Thu Nov 25 15:50:40 2004
Message-ID: <BDCB8626.13D6A%mlblood_at_cox.net>

on 11/25/04 12:36 PM, Jeff Grossman at jgrossman_at_usgs.gov wrote:

> The NomCom struggled with this issue for months this year. We were not
> able to find a satisfactory way to deal with pairings of desert
> meteorites. Until we can, we will not do this.
>
> jeff
>
> At 02:29 PM 11/25/2004, Michel Franco wrote:
>> Stan, List,
>>
>> I have not really all the details about that present case, ( who really
>> kowns ?).
>>
>> So many NWA are thought to be paired. CV 3 series, CR series, IMB series,
>> Howardite/eurcite, etc...,
>>
>> You know that a lot of collectors think now any new CK chondrite from the
>> Sahara is now said to be possibly paired with the CK recent series, same
>> with R series.
>>
>> What I personnaly think is that pairing is obvious for not brecciated
>> meteorites, much more difficult for brecciated, xenolitic, etc... Look
>> the majority of scinetific problems in NWA pairing come from brecciated ones.
>>
>> I had that case of addionnal mass and it worked for, Djermaia, fall chad
>> 1961, published this year. I have running a case with an important
>> meteorite that might be paired with an existing NWA. It is analysed thses
>> days. I'll will ask for an additonnal mass publication, if the lab says
>> it is paired, not for an extra number or another name. I do not care about
>> having the first declared mass. But some dealer care, as a new number make
>> a new meteorite and a new openning on the market. This is a major problem,
>> not the scientific pairing. Everybody knows that a new meteorite name (
>> even a new NWA !) make more money that an addionnal mass of an already
>> marketed meteorite. The smaller the TKW, the higher the $/g, that' the rule.
>>
>> I guess that if your lab say that NWA XXX is paired with your meteorite
>> then there is no objection to declare an additonnal mass. It is not that
>> much work for the Nom Com. Same as declaring a new number. The Nom Com has
>> just to publish: Additionnal mass to NWA XXX, 2.543 kg and add the name of
>> the main mass owner plus his location.
>> In fact the repsonsabilitry of the pairing is given by the lab. The Nom
>> Com only act here as a registration chamber, which is not at all
>> prejorative in my words.
>> I think that the problem comes with provisionnal number sgiven to NWA
>> meteorites. I never asked for a provisionnal number for any of my finds. I
>> send them to the lab with my proprietay hunter numbers. Then the Nom Com
>> decides what name they have. But as, I said it take a year to have it
>> published.
>>
>> Best regards
>>
>> Michel FRANCO
>> Caillou Noir www.caillou-noir.com
>> BP 16, 100 Chemin des Camp?nes
>> 74400 Les Praz de Chamonix FRANCE
>>
Anyone interested in an LA 001 Thin Section and/or a
Thin Section of Ibitira....
I can only offer only 2 of each, so please contact me off
list asap if interested.
        Happy Thanksgiving to all.
        Michael

 
Received on Thu 25 Nov 2004 03:52:54 PM PST