LaSe Wyckoff R W G Crystal Structures 1 (1963) 85-237 Second edition. Interscience Publishers, New York, New York rocksalt structure _database_code_amcsd 0011340 6.060 6.060 6.060 90 90 90 Fm3m atom x y z La 0 0 0 Se .5 .5 .5