Usually be melting the ores and adding limestone to the mix to gather the impurities which rise to the surface of the container. The impurities are then skimmed off.
Iron mainly comes from iron oxide ores, though less common ores such as the sulphide are used as available. There are usually many contaminants, such as silicon and phosphorous that need be removed by the refining process.
Ores.
Examples are: iron, copper, zinc, tin, uranium, thorium, magnesium, manganese, lithium, etc.
By smelting iron ores in the furnace, you'll earn iron ingots. Iron ores can be obtained by mining in generated caves.
Iron goods
Aluminum and iron are often found in ores. some ores are compacted with difrent minerals like iron, Aluminum
The mining of manganiferous ores valued chiefly for their iron content is classified in SIC 1011: Iron Ores
1 iron, 2 coal ores.
how the iron ores are forming
By smelting.
Most iron ores are iron oxides or iron sulfides. Iron ores are also usually hydrated (i.e. includes water of crystallization). A variety of other metal ores (e.g. copper, zinc, lead) are sometimes mixed with iron ores. In much lower concentrations, almost any element (except the inert gases) might be found.
oil, methane gas, coal, wood, mercury, iron ores, copper ores, zinc ores, lead ores