Sample of bauxite, the principal ore of the metal aluminium. Bauxite is a mineral formed of a mixture of aluminium hydroxide and aluminium oxide hydroxides, typically with some iron and titanium oxides. Aluminium is extracted from bauxite by the Bayer and then the Hall-Heroult processes. It is the most common metal in the Earth's crust and the most widely used after iron. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA |
Modell-Rechte: | nicht erforderlich |
Länge: | 28 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |