Khorium Vein
This object can be found in Coilfang: The Underbog (1), Nagrand (192), Hellfire Peninsula (228), Terokkar Forest (135), Zangarmarsh (49), Blade's Edge Mountains (109), Netherstorm (107), Shadowmoon Valley (93), Auchindoun: Sethekk Halls (3), Auchindoun: Shadow Labyrinth (1), Coilfang: The Steamvault (2), Auchindoun: Mana-Tombs (2), Coilfang: The Slave Pens (3) and Isle of Quel'Danas (2).