The move is part of the company's efforts to increase its footprint beyond beyond Burundi, where it runs the continent's only producing rare earths mine.
In total, the company has raised £11.5-million (about $15m) through a sale of new shares to investors, including Greenland Venture and Vaekstfonden, the Danish state’s investment fund.
Western powers will attend talks in Brussels next week on curbing China's dominance of rare earths and other critical resources and EU officials will present their vision to create entire green supply chains.