Bauxite is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium. Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH)3), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite and haematite, the aluminium clay mineral kaolinite and small amounts of anatase (TiO2) and ilmenite (FeTiO3 or FeO.TiO2).

In 1821 the French geologist Pierre Berthier discovered bauxite near the village of Les Baux in Provence, southern France. In 1861, French chemist Henri Sainte-Claire Deville named the substance "bauxite".

Aluminium’s unique range of properties make it the perfect material for many packaging requirements. Aluminium is: Light-weight With a density of 2.70g/cubic cm (compared with iron used in steel 7.86g/cubic cm), aluminium products are very light, cutting down on transport costs. Impermeable Aluminium has an excellent barrier function therefore keeping out air, light, liquid and microorganisms to preserve the contents of food, cosmetics and pharmaceutical products.

More Info: en.wikipedia.org