BC-8 Fayos J Journal of Solid State Chemistry 148 (1999) 278-285 Possible 3D carbon structures as progressive intermediates in graphite to diamond phase transition Note: mathematical model, phase: BC-8 _database_code_amcsd 0013988 4.293 4.293 4.293 90 90 90 Ia3 atom x y z C .1464 .1464 .1464