AM_Terbium Formula: Tb Name: Terbium Unit cell: 3.601 3.601 5.6936 90.0 90.0 120.0 , V=63.94 Space group: P63/MMC (194)

Spedding F H , Daane A H , Herrmann K W , Acta Crystallographica , 9 (1956) p.559-563, The crystal structures and lattice parameters of high-purity scandium,, yttrium and the rare earth metals, Locality: synthetic, Note: sample 99.9% pure