IAMGOLD (IAG) reported Q1 earnings late Tuesday of $0.64 per diluted share, up from $0.07 a year earlier.
Analysts polled by FactSet expected $0.53.
Revenue for the three months ended March 31 was $1.03 billion, up from $477.1 million a year earlier.
Two analysts surveyed by FactSet expected $969.7 million.