Macarthur Minerals Limited engages in the exploration and evaluation mineral resource properties in Australia and Nevada. It primarily explores for gold, lithium, iron ore, nickel, and cobalt deposits. The company holds interests in three iron ore projects in the Yilgarn region of Western Australia; various project areas in the Pilbara, Western Australia for conglomerate gold, hard rock greenstone gold, and hard rock lithium; and lithium brine interests in the Railroad Valley, Nevada. The company was formerly known as Macarthur Diamonds Limited and changed its name to Macarthur Minerals Limited in July 2005. Macarthur Minerals Limited was incorporated in 2002 and is headquartered in Toowong, Australia.