[Rockhounds] Another extinction impact-13 KYA

[J Bryan Kramer]

<
http://www.nytimes.com/2009/01/02/science/02impact.html?_r=2&partner=rss&emc=rss&pagewanted=all
>

I never heard of hexagonal diamonds, isn't that graphite's crystal
structure?

BK
-- 

""It often seems to me that the night is much more alive and richly colored
than the day."

                      Vincent van Gogh
J Bryan Krämer
North Florida, USA
photos at:
http://pbase.com/photoburner


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