Tm2S3 Range K J, Drexler H, Gietl A, Klement U, Lange K G Acta Crystallographica C46 (1990) 487-488 Tm2S3-V, a corundum-type modification of thulium sesquisulfide _database_code_amcsd 0010113 6.768 6.768 18.236 90 90 120 R-3c atom x y z Uiso Tm 0 0 .35007 .00764 S .3026 0 .25 .00975