Arena Minerals Inc., a copper and lithium exploration company, engages in the acquisition, exploration, and development of mineral properties in South America. It holds a 100% interest in the Antofalla lithium brine projects, which cover an area of 6,000 hectares located in Salar de Antofalla, Argentina; and 65% interest in the Sal de la Puna lithium project that covers approximately 14,000 hectares located in the Puna region of Salta province, Argentina. It also holds interest in the Atacama copper project, which includes the Pampa Union property that covers an area of approximately 5,000 hectares located in the Antofagasta region of Chile. The company was formerly known as Antofagasta Gold Inc. and changed its name to Arena Minerals Inc. in December 2013. Arena Minerals Inc. was incorporated in 1995 and is headquartered in Toronto, Canada. As of April 20, 2023, Arena Minerals Inc. operates as a subsidiary of Lithium Americas Corp.