It now expects to produce at least 180,000-210,000 ounces of gold this year at Kışladağ, which brings Eldorado's full-year guidance down from 365,000-400,000 ounces to 315,000-365,000 ounces.
The company, which owns the Cullinan mine that has produced the two largest diamonds in the British Crown Jewels, said output and revenue will be lower than market expectations.
The company, which has been present in the south-eastern African country for more than a decade, says that by 2021 will be producing 3,000 tonnes of rare earths per year.