Wurtzite-2H Yeh C, Lu Z W, Froyen S, Zunger A Physical Review B46 (1992) 10086-10097 Zinc-blende-wurtzite polytypism in semiconductors _database_code_amcsd 0015169 3.777 3.777 6.188 90 90 120 P6_3mc atom x y z Biso Zn 1/3 2/3 0 .9 S 1/3 2/3 .375 .7