Explanation:
The members of Group \(13\) elements are: Boron, Alumunium, Gallium, Indium and Thallium
Generally, the oxidation state of members of boron family is \(+3\) and \(+1\).
On moving down the group, the tendency to form \(+1\) ion increases due to the inert pair effect.
Every element of the Boron family reacts with oxygen at high temperature forming trioxides, \(M _2 O _3\).
\(4 M ( s )+6 O _2( g ) \rightarrow 2 M _2 O _3( s )\)
Bauxite is an oxide mineral of aluminium.
Chemical formula \(Al _2 O _3 \cdot 2 H _2 O\).
Hence Bauxite is an oxide mineral of Aluminium.