Appia Rare Earths & Uranium Corp. engages in the acquisition, exploration, and development of mineral properties in Canada and Brazil. It primarily explores for rare earth elements (REE), uranium, and gallium deposits. The company owns 100% interests in the Elliot Lake property comprising 61 mining claims covering an area of approximately 13,008 hectares located in northern Ontario; and the Alces Lake property covering an area of 38,522.43 contiguous hectares, as well as the Eastside property that covers an area of 4,933 hectares; the Loranger property comprising 26,409 hectares; the North Wollaston property covering an area of 16,682 hectares; and Other side property comprising 27,291 hectares located in the Athabasca Basin area, northern Saskatchewan. It also holds the right to acquire a 70% the Cachoeirinha (PCH) project consists of 22 claims covering approximately an area of 40,963.18 hectares located in the Tocantins Structural Province in the Brasília Fold Belt, the Goiás State of Brazil. The company was formerly known as Appia Energy Corp. and changed its name to Appia Rare Earths & Uranium Corp. in October 2021. Appia Rare Earths & Uranium Corp. was incorporated in 2007 and is based in Toronto, Canada.