Peru, Brazil and Argentina); silver (mainly in Peru, Chile, Bolivia and Argentina); copper (mainly in Chile, Peru and Brazil); iron ore (Brazil, Peru and Chile); zinc (Peru, Bolivia and Brazil); molybdenum (Chile and Peru); lithium (Chile, Argentina and Brazil); lead (Peru and Bolivia); bauxite (Brazil); tin (Peru, Bolivia and Brazil); manganese (Brazil); antimony (Bolivia and Ecuador); nickel (Brazil); niobium (Brazil); rhenium (Chile); iodine (Chile), among others. Brazil stands out in the extraction of iron ore (where it is the 2nd largest producer and exporter in the world - iron ore is usually one of the 3 export products that generate the greatest value in the country's trade balance), copper, gold, bauxite (one of the 5 largest producers in the world), manganese (one of the 5 largest producers in the world), tin (one of the largest producers in the world), niobium (concentrates 98% of reserves known to the world) and nickel. In terms of gemstones, Brazil is the world's largest producer of amethyst, topaz, agate and one of the main producers of tourmaline, emerald, aquamarine, garnet and opal. Chile contributes about a third of the world copper production. In addition to copper, Chile was, in 2019, the world's largest producer of iodine and rhenium, the second largest producer of lithium and molybdenum, the sixth largest producer of silver, the seventh largest producer of salt, the eighth largest producer of potash, the thirteenth producer of sulfur and the thirteenth producer of iron ore in the world. In 2019, Peru was the 2nd largest world producer of copper and silver, 8th largest world producer of gold, 3rd largest world producer of lead, 2nd largest world producer of zinc, 4th largest world producer of tin, 5th largest world producer of boron and 4th largest world producer of molybdenum. In 2019, Bolivia was the 8th largest world producer of silver; 4th largest world producer of boron; 5th largest world producer of antimony; 5th largest world producer of tin; 6th largest world producer of tungsten; 7th largest producer of zinc, and the 8th largest producer of lead. In 2019, Argentina was the 4th largest world producer of lithium, the 9th largest world producer of silver, the 17th largest world producer of gold and the 7th largest world producer of boron. Colombia is the world's largest producer of emeralds. In the production of gold, among 2006 and 2017, the country produced 15 tons per year until 2007,