TmAs Wyckoff R W G Crystal Structures 1 (1963) 85-237 Second edition. Interscience Publishers, New York, New York rocksalt structure _database_code_amcsd 0011428 5.711 5.711 5.711 90 90 90 Fm3m atom x y z Tm 0 0 0 As .5 .5 .5