This document summarizes the extraction process of aluminium. It begins by describing how aluminium is commonly found combined with other elements in rocks. It then discusses bauxite, the main ore for aluminium, which forms from the weathering of aluminium-containing rocks in tropical areas. The summary describes the two main steps to extract aluminium as purifying bauxite into high purity alumina using the Bayer process, and then reducing the alumina using carbon in an electrolysis process to produce molten aluminium metal. It concludes by listing some key uses of aluminium such as in transportation and electrical applications due to its light weight, conductivity, and corrosion resistance.