Carbon phase diagram, based on calculations from 1980s. Newer work indicates that the melting point doesn't go above about 9000 K.
<a href="//commons.wikimedia.org/w/index.php?title=User:Trackler&amp;action=edit&amp;redlink=1" class="new" title="User:Trackler (page does not exist)">Trackler</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Trackler" title="User talk:Trackler"><span class="signature-talk">talk</span></a>) 13:05, 18 July 2010 (UTC)
<a rel="nofollow" class="external text" href="http://lbruno.home.cern.ch/lbruno/documents/Bibliography/LHC_Note_78.pdf">J.M. Zazula (1997). "On Graphite Transformations at High Temperature and Pressure Induced by Absorption of the LHC Beam". CERN.</a> Retrieved 2010-07.