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Iron ore exports from Brazil's top producing states rose in the first four months of 2017, according to the development, industry and foreign trade ministry MDIC.
Iron ore exports from Minas Gerais state soared 127% year-on-year to US$3.31bn, while those of ferroniobium rose 18.8% to US$445mn. Gold exports fell 2.31% to US$250mn, while pellet exports brought in US$151mn, up 156%, MDIC figures show.
The state's total exports in the four months rose 39.6% to US$8.64bn.
China was Minas Gerais' main export destination, followed by the US, Argentina, the Netherlands and Japan.
Iron ore exports from Pará state were up 160% to US$2.83bn in January-April.
Copper and copper in concentrate exports jumped 21.1% to US$542mn, according to MDIC data.
Calcined alumina exports were down 11.4% to US$403mn, while the state's total exports increased 66.4% to US$4.67bn.
China was also the main destination for Pará exports, followed by Japan, Germany, Canada and Norway.
Overall, Brazil's iron ore exports rose 68.9% year-on-year in April.