Johannesburg - Aquarius Platinum [JSE:AQP] said it named Chief Operating Officer Jean Nel chief executive, a month after industry veteran Stuart Murray left the company.
Nel joined Aquarius, the world's fourth-largest platinum miner, in July 2011 and was appointed COO last month.
He is taking on the reins of the company at a time when the platinum sector in South Africa - home to nearly 80% of the world's known platinum reserves - is battling the impact of falling prices, weak demand and soaring costs. Several mines there faced workers' unrest recently.
Murray, a chemical engineer, resigned in October after more than a decade at the helm where he oversaw the growth of the company from a single mine to number four player.
Aquarius shares were down marginally at 38.93 pence at 09:21 GMT on Monday on the London Stock Exchange. They have fallen about 18% since Murray resigned.