Zinc Hull A W, Davey W P Physical Review 17 (1921) 549-570 Graphical determination of hexagonal and tetragonal crystal structures from X-ray data Locality: synthetic _database_code_amcsd 0015115 2.670 2.670 4.966 90 90 120 P6_3/mmc atom x y z Zn 1/3 2/3 .25