[meteorite-list] Diamonds and Ureilites

From: Gary Fujihara <fujmon_at_meteoritecentral.com>
Date: Tue, 01 Dec 2009 09:15:02 -1000
Message-ID: <F6E95C4E-6418-44B8-A8AB-9A57614F1657_at_mac.com>

I don't know the answer to your question Greg, but Gary Huss at UH Hawaii Institute of Geophysics and Planetology showed me a huge Ureilite slab that was cut on a wire saw that had large 2-5mm grooves in it. He said that the diamonds were so hard that the wire went around them in the matrix of the stone and created those grooves. Unreal. I wish I had thought to take a picture of it.

Here is a picture I did get of Gary with some of his specimens he shared with participants of our HISTAR workshop last summer: http://astroday.net/Images/HISTAR09/HS12.jpg

gary

On Dec 1, 2009, at 8:48 AM, Greg Stanley wrote:

>
> List:
>
> I was wondering if anyone knows which Ureilite contains the most diamonds, and how much (perhaps by percent) it contains. I've read that they are often difficult to cut because of the diamonds in the matrix.
>
> Much Thanks,
>
> Greg S.
>
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Gary Fujihara
AstroDay Institute
105 Puhili Place, Hilo, HI 96720
(808) 640-9161, fujmon at mac.com
http://astroday.net
Received on Tue 01 Dec 2009 02:15:02 PM PST