The accident took place in an open-pit area people had gone into in search of gold. Informal mining is a common and dangerous practice in much of West Africa.
Barrick Gold's negotiations with Mali's government to end a protracted dispute over payments from the Loulo-Gounkoto gold complex were suspended without reaching an agreement.
Barrick Gold (GOLD) is scheduled to announce Q4 earnings report on Wednesday before the market opens, with analysts expecting double-digit gains in profit and revenue driven by a blistering rally in gold prices.
Mali has introduced taxes on mobile voice calls and mobile-money withdrawals to support its fight against an Islamic insurgency that's threatening to take over part of the country.
The Malian government's overhaul of its extraction industry risks deterring companies from investing in the nation that's home to the world's second-largest gold mine, according to Anglo American Plc Chief Executive Officer Duncan Wanblad.