[meteorite-list] Weird inclusion in NWA 2086 CV3

From: Bob King <nightsky55_at_meteoritecentral.com>
Date: Mon, 9 Aug 2010 21:30:21 -0400
Message-ID: <AANLkTiky+OEc9_xNnnAi0EHQ=Nux65yS=FbpL4-7XMOa_at_mail.gmail.com>

Hey Mike,
Almost looks like staining (rust) to me especially in photos 2 and 3.
Bob

On Mon, Aug 9, 2010 at 8:28 PM, Galactic Stone & Ironworks
<meteoritemike at gmail.com> wrote:
> Hi List,
>
> Has anyone ever seen an inclusion like this in a CV3 meteorite? ?It is
> a brown. featureless, area that snakes through the surrounding matrix
> and chondrules. ?I have seen light and dark inclusions in different
> carbonaceous meteorites, including Allende, but I have not seen an
> inclusion like this one. ?I cut several fragments of this meteorite
> and most had a predominately dark-matrix lithology. ?One fragment had
> a small portion of dark matrix lithology, and a predominate
> lighter-grey matrix lithology. ?It was in this light-matrix stone that
> this weird "glassy" brown inclusion appeared during cutting. ?It
> resembles caramel and has a slick texture compared to the rest of the
> meteorite. ?Under the loupe, it appears very fine grained, almost
> glassy, like an olivine. ?It does not appear to be oxidation of any
> kind. ?The inclusion ran through the entire fragment and I have 4
> different pieces that show it. ?Besides this inclusion, there is the
> expected mixture of chondrules and CAI's. ?The pieces shown in the
> photos are rough-sawn - no sanding or polishing yet. ?The pieces shown
> are an endcut and a slice. ?The endcut weighs 5.18g and the slice
> weighs 3.27g.
>
> The close-up photo of the "?" (question mark) shaped inclusion is the
> clearest. ?I'll try to snap some better photos tomorrow under outside
> natural lighting.
>
> http://i268.photobucket.com/albums/jj24/Meteoritethrower/2086-inclusion-3.jpg
>
> http://i268.photobucket.com/albums/jj24/Meteoritethrower/2086-inclusion-1.jpg
>
> http://i268.photobucket.com/albums/jj24/Meteoritethrower/2086-inclusion-2.jpg
>
> Does anyone know what this inclusion might be?
>
> Best regards,
>
> MikeG
>
>
> --
> ------------------------------------------------------------
> Mike Gilmer - Galactic Stone & Ironworks Meteorites
> http://www.galactic-stone.com
> http://www.facebook.com/galacticstone
> ------------------------------------------------------------
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Received on Mon 09 Aug 2010 09:30:21 PM PDT