Magna Terra Minerals Inc. engages in the acquisition and exploration of mining properties in Canada and Argentina. It explores for gold, silver, copper, and cobalt deposits. The company owns 100% interest in the Viking and Great Northern Projects located in the Newfoundland and Labrador; Cape Spencer Project located in the east of the City of Saint John, New Brunswick; Hawkins Love Project located in west of the City of Saint John, New Brunswick. It also holds 100% control in the Luna Roja Project located in the Santa Cruz Province, Argentina; Piedra Negra Project located in the Santa Cruz Province, Argentina; Cerro Covadonga Project located in Argentina; El Meridiano Project is located in the Deseado Massif, Santa Cruz Province; Gertrudis Project is in the north-eastern part of the Deseado Massif, Argentina; La Rosita M.D. Project located in the south-western corner of the Deseado Massif, Argentina; Siagnos located in the Santa Cruz Province, Argentina; and Boleadora Group of properties located in Santa Cruz Province, Argentina. In addition, it holds interests in the Humber project in Western Newfoundland, Canada. 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. is headquartered in Toronto, Canada.