Uncertainty around the charter has deterred investment into a sector that accounts for 8 percent of gross domestic product in the world's top platinum producer.
Shares jumped after the company said it had submitted additional technical studies to environmental and natural resources authority for permitting approval at its La India project.
Gold production for the three months to June dropped 36% to 133,778 ounces as operations at two its three mines - Bulyanhulu and Buzwagi – were scaled back.
Nigeria will offer a 12.7 billion naira ($41.6 million) mining contract to eight companies in exploration and consultancy, its junior mining minister said on Wednesday.