For those who are interested, my colleague and I recently worked on
the black diamonds from the Canyon Diablo meteorite. The abstract can
be downloaded at
www.lpi.usra.edu/meetings/lpsc2009/pdf/1346.pdf
In summary, they are not pure diamond but a combination of diamond,
lonsdaleite (hexagonal diamond), and graphite. We also found areas
that were neither diamond or lonsdaleite.
Laurence
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Laurence A.J. Garvie
Collections Manager
Center for Meteorite Studies
School of Earth and Space Exploration
Arizona State University
Tempe
AZ 85287-1404
USA
phone: 480 965 3361
fax: 480 965 8102
email: [email protected]
Weblinks:
School of Earth and Space Exploration: http://sese.asu.edu/
Center for Meteorite Studies: http://meteorites.asu.edu/
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