[meteorite-list] Weird inclusion in NWA 2086 CV3

[Bob King]

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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