[meteorite-list] Re: LIST OF THE NEW DaG'S
From: Michel <Michel_at_meteoritecentral.com>
Date: Thu Apr 22 09:37:31 2004
Rob & list
Some labs make a first visual survey and only analyse the rarest finds
first, then the OC. It can happen that some OC change of type but it is very
Other labs give a DaG number according the field names given by the hunter.
I do not know how Giorgio gives his numbers.
We give chronological numbers.
----- Message d'origine -----
De : Matson, Robert <ROBERT.D.MATSON_at_saic.com>
À : <meteorite-list_at_meteoritecentral.com>
Envoyé : lundi 4 décembre 2000 19:14
Objet : RE: LIST OF THE NEW DaG'S
> Hi All,
> Regarding Matteo's Saturday post of the new DaG's (found in 1999)
> that will appear in Met. Bull. #85: evidently, someone is
> pre-sorting these DaG's before numbers are assigned. For U.S.
> locations and Antarctica (although I'm less sure on the latter),
> the meteorite numbers are more or less sequential by the
> chronological order in which they were found. For DaG, it
> looks like the numbers are sequenced more by rarity.
> Consider this sequence of 13 meteorites from Matteo's list:
> > DaG 659 - tkw 622 - L6
> > DaG 660 - " 86 - Ureilite (typ)
> > DaG 661 - " 23 - Ureilite (mos)
> > DaG 662 - " 358 - H6
> > DaG 663 - " 532 - L6
> > DaG 664 - " 104 - L6
> > DaG 665 - " 363 - Ureilite Breccia
> > DaG 666 - " 33 - L(LL)3 breccia
> > DaG 667 - " 108 - CO3
> > DaG 668 - " 86 - CO3
> > DaG 669 - " 926 - Howardite
> > DaG 670 - " 1619 - Shergottite
> > DaG 671 - " 485 - Howardite
> 9 out of these 13 are among the rarist meteorite types. I
> guess I was just curious why DaG is special in this regard.
> Are there any other regions where this type of pre-sorting
> takes place? --Rob
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Received on Tue 05 Dec 2000 03:30:53 AM PST