Aluminium hydroxide, Al(OH)3, is found in nature as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs: bayerite, doyleite, and nordstrandite.
Aluminiumhydroxid, Al(OH)3, findes i naturen som mineralet gibbsit (også kendt som hydrargillit) og dets tre meget mere sjældne polymorfer: bayerit, doyleit og nordstrandit.