Hi Dirk and All,

Thanks for the diamond info. However I was unable to find the answer to a question I have been wondering about for a while. Do the diamonds in ureilites melt as the meteorite passes through the earth's atmosphere?

I have read that the melting point of diamond at 1 atmosphere is about 4000 degrees K. Does atmospheric melting on the meteorite's surface ever come close to that? What is the vaporization temperature of olivine? Might that yield a clue?

Cheers,

Martin H



On Feb 24, 2005, at 7:34 AM, drtanuki wrote:

 Dear List,
  Here is a link to everything you wanted to know
about diamonds and minerals in meteorites.  I hope
you
find the site interesting.
Sincerely, Dirk Ross...Tokyo
 http://brysonburke.com/aboutdiamonds.html

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