Volcan benefitted from stronger metals prices and cost-cutting, but posted a loss last year as the acquisition of 55% stake by Glencore required adjustments to financial statements.
Company profits slipped in Q4 despite higher sales.
The Brazilian giant also reported higher pellet production, while better copper and nickel output from Brazilian mines was overshadowed by declines in Canada.
Peru reported the highest number of social conflicts since July 2017, as mining-related protests broke out around the country in the run-up to October municipal and regional elections.
Lundin Gold reports 2017 results, FDN project plans
An updated resource estimate and a revised scope study are expected to be issued during the first quarter of 2018.