bauxite
Bauxite with a core of unweathered rock.
bauxite
ore
bauxite, rock largely composed of a mixture of hydrous aluminum oxides. Bauxite is the principal ore of aluminum. Bauxites vary physically according to the origin and geologic history of their deposits: some deposits are soft, easily crushed, and structureless; some are hard, dense, and pisolitic, or pealike; still others are porous but strong or are stratified or largely pseudomorphic after their parent rock. The laterite type is commonly pisolitic and mottled, with pisolites ranging in...
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