[meteorite-list] Odp: [MICRO] Diamonds and Ureilites

[Tomasz Jakubowski]

Dear List Members,
thats true Greg, ureilites contain um size diamonds but also nanometers 
(smallest grains We discover had 320 nm, but smaller are also found). 
Usually diamonds have 2 - 10 um in size, they are set in vein like area 
between olivine, pygeonite cristals.
If someone will be interest I can send many publication about ureilitic 
diamonds off list. I think that Ted Bunch who read List can say 
somethong about their origin.


Kind Regards
Tomek Jakubowski
IMCA  #2321



Dnia 1-12-2009 o godz. 20:02 Greg Hupe napisał(a):
> Hi Greg S. and List,
> 
> Greg S. asked:
> "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."
> 
> Ureilites contain 'micro'-diamonds, and in a word on how difficult they
> are
> to cut and polish, "A Pain!" The first ureilites we purchased in Morocco
> several years ago we learned just how painful and expensive they were to
> prepare. Basically if you are using an 8" .012 diamond blade, expect to go
> through at least one blade per inch of cutting (if you are lucky!)!
> 
> Best regards,
> Greg
> 
> ====================
> Greg Hupe
> The Hupe Collection
> NaturesVault (eBay)
> gmhupe at htn.net
> www.LunarRock.com
> IMCA 3163
> ====================
> Click here for my current eBay auctions:
> http://search.ebay.com/_W0QQsassZnaturesvault
> 
> ----- Original Message -----
> From: "Greg Stanley" <stanleygregr at hotmail.com>
> To: <meteorite-list at meteoritecentral.com>
> Sent: Tuesday, December 01, 2009 1:48 PM
> Subject: [meteorite-list] Diamonds and Ureilites
> 
> 
> 
> 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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mgr. Tomasz Jakubowski
nr telefonu : 602 889 836
Skype : tymon65
GG : 6541214

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