[meteorite-list] unusual crystalline structure found in NWA --your thoughts please

From: hall at meteorhall.com <hall_at_meteoritecentral.com>
Date: Mon, 25 Mar 2013 18:22:37 -0400
Message-ID: <97086e500e13295af7cea1a30fbf0a2f.squirrel_at_emailmg.ipage.com>

In the world of earth rocks, if you were to slice clevelandite or barite,
the structure would look much like your mystery crystals.
Fred H

> Hi list
> Jason Borst (http://www.opalandjasper.com) who cuts my larger
> specimens has encountered an unusual crystal structure today in an
> otherwise ordinary looking NWA.
>
> Reminds me of a barred olivine chondrule except of course they aren't
> contained within a chondrule.And it's likely not olivine.
>
> I've uploaded a couple of shots for your perusal.I can't recall seeing
> such a structure before in a meteorite.Interested in thoughts and
> references please.
> Many thanks
> Jim
>
> big one http://pix.ie/meteoriteseire/3203745/size/1024
> full slice http://pix.ie/meteoriteseire/3203747/size/640
>
>
> http://www.emeraldislemeteorites.com
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Received on Mon 25 Mar 2013 06:22:37 PM PDT