we extract gold from iron ore

GCSE Science: chemistry To be useful, the metals have to be extracted from whatever they are mixed with. A metal ore is a rock containing a metal (in elemant form or as a compound) in a high enough concentration to make it worthwhile extracting the metal. The method used to extract metals from the ore depends on their reactivity. Iron Ore | HowStuffWorks Most important, it releases oxygen from the iron ore, which makes up a high percentage of common iron ores. The most primitive facility used to smelt iron is a bloomery . There, a blacksmith burns charcoal with iron ore and a good supply of oxygen (provided by a bellows or blower). Mineral Resources Iron is the found in abundance in minerals, but the process of extracting iron from different minerals varies in cost depending on the mineral. It is least costly to extract the iron from oxide minerals like hematite (Fe 2 O 3 .    Read More

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