Small Thorium Vein
This object can be found in Tanaris (120), Silithus (82), Burning Steppes (76), Blasted Lands (62), Un'Goro Crater (62), Western Plaguelands (50), Felwood (49), Winterspring (46), Searing Gorge (30), Eastern Plaguelands (26), The Hinterlands (20), Feralas (4) and Swamp of Sorrows (3).