BeSe Wyckoff R W G Crystal Structures 1 (1963) 85-237 Second edition. Interscience Publishers, New York, New York Note: ZnS structure, sphalerite structure _database_code_amcsd 0011515 5.07 5.07 5.07 90 90 90 F-43m atom x y z Be 0 0 0 Se .25 .25 .25