Lonsdaleite
Yeh C, Lu Z, Froyen S, Zunger A
Physical Review B46 (1992) 10086-10097
Zinc-blende-Wurtzite polytypism in semiconductors
_cod_database_code 1100004
_database_code_amcsd 0018218
2.49 2.49 4.144 90 90 120 P6_3mc
atom   x   y    z
C1   1/3 2/3    0
C2   1/3 2/3 .374