Aluminium oxide
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Aluminium oxide is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium
Aluminium oxide A
Corundum from Brazil, size about 2×3 cm.
A 1950s vintage ice cream scoop. Aluminium oxide residue can be seen rubbed off on the cloth beneath.
Bauxite
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Bauxite is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium and gallium. Bauxite consists mostly of the aluminium minerals gibbsite, boehmite, an
Aluminium oxide
…oxide. It is commonly called alumina and may also be called aloxide, aloxite, ALOX or alundum in various forms and applications. Alumina is refined from bauxite. It occurs naturally in its crystalline polymorphic phase α-Al2O3 as the mineral corundum, varieties of which form the precious gemstones ruby and…
Reddish-brown bauxite
Bauxite with US penny for comparison
Bauxite with core of unweathered rock
One of the world's largest bauxite mines in Weipa, in northern Queensland, Australia