A) galena
B) calamine
C) calcite
D) bauxite
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The correct answer is D) bauxite
The most important ore of aluminium is Bauxite.
It is a mixture of hydrous aluminium oxide, aluminium hydroxide, clay minerals and insoluble materials. Bauxite is a widely used ore for the production of aluminium metal.
It is also used as a raw material for the production of alumina, which is then used to create aluminium alloys. Bauxite has a variety of uses, from its use as an abrasive in industrial applications to its use in the production of cement.