Question

4. On the political map of the World mark the following

a) 2 iron ores mines in Africa

b) 2 iron and steel plants in North America

c) 1 iron ore mine in Australia​

Answer 1

Answer:

Iron ore

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Iron ores[1] are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (Fe

3O

4, 72.4% Fe), hematite (Fe

2O

3, 69.9% Fe), goethite (FeO(OH), 62.9% Fe), limonite (FeO(OH)·n(H2O), 55% Fe) or siderite (FeCO3, 48.2% Fe).



Hematite: the main iron ore in Brazilian mines



Stockpiles of iron ore pellets like this one are used in steel production.



Iron ore being unloaded at docks in Toledo, Ohio

Ores containing very high quantities of hematite or magnetite (greater than about 60% iron) are known as "natural ore" or "direct shipping ore", meaning they can be fed directly into iron-making blast furnaces. Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel—98% of the mined iron ore is used to make steel.[2] In 2011 the Financial Times has speculated that iron ore is "more integral to the global economy than any other commodity, except perhaps oil".[3]