Pacific Nickel Mines Limited engages in the mineral exploration and development business in Australia. It primarily explores for nickel deposits. The company's principal properties include the Jejevo and Kolosori nickel projects located on Santa Isabel Island. The company was formerly known as Malachite Resources Limited and changed its name to Pacific Nickel Mines Limited in November 2020. Pacific Nickel Mines Limited was incorporated in 1996 and is based in Sydney, Australia.