Meridian Mining UK Societas, together with its subsidiaries, engages in the acquisition, exploration, and development of mineral properties in Brazil. It explores for manganese, gold, copper, silver, and tin deposits. The company's flagship property is the Cabaçal copper-gold project located in the state of Mato Grosso, Brazil. The company was formerly known as Meridian Mining S.E. Meridian Mining UK Societas was founded in 2013 and is headquartered in London, the United Kingdom.