[meteorite-list] Weird inclusion in NWA 2086 CV3

[Jeff Kuyken]

G'day Mike,

Interesting piece. I've seen a bit of a new CV3 meteorite coming out from 
Morocco lately and much of it looks similar to yours. Firstly, take a look 
at this page on Dark Inclusions:

http://www.meteorites.com.au/odds&ends/DarkInclusions.html

It could be possible that the unusual inclusion in yours is a weathered one 
of these. But at the same time, this new CV material coming out of Morocco 
is different to the stuff I've seen in the past. I think the only way I can 
explain it is to say that it almost appears 'muddy'. I guess it's like 
saying that there are a few largish chondrules set in a very fine-grained 
'muddy' matrix. It's possible yours could be an exaggerated example of that?

Nice piece,

Jeff


----- Original Message ----- 
From: "Galactic Stone & Ironworks" <meteoritemike at gmail.com>
To: "Meteorite List" <meteorite-list at meteoritecentral.com>
Sent: Tuesday, August 10, 2010 10:28 AM
Subject: [meteorite-list] Weird inclusion in NWA 2086 CV3


> 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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