A near-Earth object is not a type of celestial body.
Aluminium hydroxide , Al -LRB- OH -RRB- 3 , is found in nature as the mineral gibbsite -LRB- also known as hydrargillite -RRB- and its three much rarer polymorphs  : bayerite , doyleite and nordstrandite .. gibbsite. gibbsite. polymorphs. Polymorphism ( materials science ). Aluminium hydroxide is amphoteric in nature , i.e , it has both basic and acidic nature .. amphoteric. Amphoterism. basic. Basic chemicals. acidic. Acid ( chemistry ). Closely related are aluminium oxide hydroxide , AlO -LRB- OH -RRB- , and aluminium oxide -LRB- or alumina -RRB- , Al2O3 .. aluminium oxide hydroxide. aluminium oxide hydroxide. aluminium oxide. aluminium oxide. Aluminium oxide is also amphoteric in nature .. amphoteric. Amphoterism. These compounds together are the major components of the aluminium ore bauxite .. ore. ore. bauxite. bauxite