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Where does aluminium come from?

Aluminium is derived from the ore bauxite.  First bauxite is mined from typically shallow deposits, and then it is refined into alumina (alumina hydroxide – Al2O3) using the Bayer process at an alumina refinery. The alumina, a powdery white substance, is then sent to an aluminium smelter where it subjected to electrolysis (Hall/Héroult process) which separates out the aluminium metal.