[meteorite-list] Norwegian meteorite classificationguessinggame

From: Martin Horejsi <accretiondesk_at_meteoritecentral.com>
Date: Tue Jul 18 15:30:15 2006
Message-ID: <9c2f96d20607181230m4753bcc7gb82f37e5f21975c0_at_mail.gmail.com>

OK Adam, I'll see your supersized margarita at the Birthday Bash, and
raise you a beer at Blood's auction.

Since you think it is an H4, S1-2, W0, and I think it is a CO3.2 S0,
W0, we only agree on one obvious element in our classification
S.W.A.G. However I suggest that there be a winner (between you and me)
based upon whomever is least wrong.

Given that certain chondrites are predisposed(?) to contraction cracks
(Holbrook and Nuevo Mercuiro come to mind), while others of these two
extremely common classes (L6 and H5) often have no visible cracks, I
have trouble using this observation as much of an indicator even in
our already primitive classification method.

Cheers,

Martin

On 7/18/06, Adam Hupe <raremeteorites_at_comcast.net> wrote:
> Nor is it flat black and velvety.
>
>
> ----- Original Message -----
> From: "Martin Altmann" <altmann_at_meteorite-martin.de>
> To: <meteorite-list_at_meteoritecentral.com>; "'Adam Hupe'"
> <raremeteorites_at_comcast.net>
> Sent: Tuesday, July 18, 2006 12:20 PM
> Subject: AW: Re: [meteorite-list] Norwegian meteorite
> classificationguessinggame
>
>
> http://fernlea.tripod.com/kainsaz2.jpg
>
> And that Kainsaz has no cracks...
>
>
> -----Urspr?ngliche Nachricht-----
> Von: meteorite-list-bounces_at_meteoritecentral.com
> [mailto:meteorite-list-bounces_at_meteoritecentral.com] Im Auftrag von Adam
> Hupe
> Gesendet: Dienstag, 18. Juli 2006 20:37
> An: meteorite-list_at_meteoritecentral.com
> Betreff: Re: Re: [meteorite-list] Norwegian meteorite
> classificationguessinggame
>
> Here is a great image on Mike Farmer's site that shows the contraction
> cracks on a CO3 fall, Thank you Martin Altmann for providing this link
> earlier. If you look very closely, you will see the faint webwork of
> contraction cracks so typical of CO3s:
>
> http://www.meteoriteguy.com/collection/images/kainsaz/DSCN5252-cp.jpg
>
> Take Care,
>
> Adam
>
>
> ----- Original Message -----
> From: "Adam Hupe" <raremeteorites_at_comcast.net>
> To: <meteorite-list_at_meteoritecentral.com>
> Sent: Tuesday, July 18, 2006 11:23 AM
> Subject: Re: Re: [meteorite-list] Norwegian meteorite classification
> guessinggame
>
>
> > Hi Martin and All,
> >
> > I don not think images are a good way to ascertain classifications but in
> > this case I took a S.W.A.G. at it in the interest of fun. I think the
> crust
> > is wrong for a CO3 because virtually every sample of a CO3 I have seen has
> > very fine contraction cracks, some do not even penetrate as deep as the
> > matrix. These cracks show up in detailed images. These cracks are absent
> in
> > the enhanced image provided by a List member taken from an article on the
> > new fall. The color of CO3 type crusts is usually semi-gloss black, never
> > flat black like the one in the image. In my opinion, the crusts are always
> > uniformly thin on a CO3 and never velvet-like and patchy.
> >
> > I think many feel it is a CO3 based on the numerous very small chondrules
> > and not the crust. I agree the chondrules are too small for an LL, CV, CR,
> > CK or even an L. They are too numerous for a CM2 which are sparsely
> > populated. This leaves only CO, H or Anom types as candidates. I picked an
> H
> > type because I have seen examples with exceedingly small chondrules,
> velvet
> > like flat black crusts and friable matrixes.
> >
> > Take Care,
> >
> > Adam
> >
> >
> > ----- Original Message -----
> >
> > From: "Martin Horejsi" <accretiondesk_at_gmail.com>
> > To: "Adam Hupe" <raremeteorites_at_comcast.net>
> > Cc: "Michael Farmer" <meteoritehunter_at_comcast.net>;
> > <meteorite-list_at_meteoritecentral.com>
> > Sent: Tuesday, July 18, 2006 5:46 AM
> > Subject: Re: Re: [meteorite-list] Norwegian meteorite classification
> > guessing game
> >
> >
> > > On 7/17/06, Adam Hupe <raremeteorites_at_comcast.net> wrote:
> > > > The crust is wrong for a CO3. The famous "Out House Hammer Stone", I
> > can
> > > > smell history in the making!
> > >
> > > Hi Adam,
> > >
> > > In what way do you think the crust is wrong for a CO3?
> > >
> > > Just curious.
> > >
> > > Martin
> >
> >
> > ______________________________________________
> > Meteorite-list mailing list
> > Meteorite-list_at_meteoritecentral.com
> > http://six.pairlist.net/mailman/listinfo/meteorite-list
>
>
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Received on Tue 18 Jul 2006 03:30:13 PM PDT