Skippenite Nakajima S Journal of Physics and Chemistry of Solids 24 (1963) 479-485 The crystal structure of Bi2Te3-xSex Locality: synthetic _database_code_amcsd 0013194 4.218 4.218 29.240 90 90 120 R-3m atom x y z occ Biso Bi 0 0 .3985 2.00 Se1 0 0 0 2.00 Se2 0 0 .2115 .5 2.00 Te 0 0 .2115 .5 2.00