Poseidon Nickel Limited engages in the exploration, development, mining, and production of mineral properties in Australia. The company primarily explores for nickel and gold deposits. It holds interests in the Mt Windarra, Black Swan, and Lake Johnston nickel projects located in Western Australia. The company was formerly known as Niagara Mining Limited and changed its name to Poseidon Nickel Limited in 2007. Poseidon Nickel Limited was incorporated in 1993 and is based in West Perth, Australia.