Magna Terra Minerals Inc. engages in the acquisition and exploration of mining properties in Canada and Argentina. It explores for gold and silver deposits. The company controls 37,000 hectares of exploration rights in the mining friendly Santa Cruz province of Argentina. It also holds interest in the Great Northern and Viking projects located in Newfoundland and Labrador; and the Cape Spencer project located in New Brunswick. The company was formerly known as Brionor Resources Inc. and changed its name to Magna Terra Minerals Inc. in June 2017. Magna Terra Minerals Inc. was incorporated in 2009 and is headquartered in Toronto, Canada.