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" <[email protected]>
To: "Meteorite List" <[email protected]>
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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