Lonsdaleite
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: diamond(hex)
_database_code_amcsd 0013990
2.52 2.52 4.12 90 90 120 P6_3/mmc
atom   x   y     z
C    1/3 2/3 .0625