[meteorite-list] Norwegian meteorite classification guessing game

From: Martin Horejsi <accretiondesk_at_meteoritecentral.com>
Date: Tue Jul 18 14:34:42 2006
Message-ID: <9c2f96d20607181134k3c7ed2a9mff37ffc145556628_at_mail.gmail.com>

Hi Adam,

I agree that third-hand Internet-based visual means are an extremely
poor, unreliable, ineffective, and highly inappropriate method of
classifying meteorites. But I also agree that it is fun.

Your scientific wild-assed guess and mine likely differ based upon our
personal experiences with meteorites. So... are you willing to bet a
margarita in Tucson on your guess? I am.

Cheers,

Martin






On 7/18/06, Adam Hupe <raremeteorites_at_comcast.net> wrote:
> 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
>
>
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Received on Tue 18 Jul 2006 02:34:39 PM PDT