write the name of two important ores and molecular formula
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Bauxite(Al2O3.2H20)-Aluminium
Zinc Blende( ZnS)-Zinc
Zinc Blende( ZnS)-Zinc
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The main ore of aluminum is bauxite. Bauxite is a mixture of minerals rather than a single mineral, and as such does not have a fixed composition. It consists primarily of aluminum oxide/hydroxide minerals. Bauxite contains the aluminum minerals gibbsite (Al(OH)3), bohmite (AlOOH), and diaspore (also AlOOH, a different crystal structure) along with iron oxide/hydroxide (essentially rust) and other impurities.
Aluminum oxide (Al2O3) is also known in nature as corundum (gem varieties are ruby and sapphire), but does not occur in bauxite and is too rare to be a major aluminum ore. It is produced during bauxite refining and is the feed material for electrolytic production of aluminum metal.
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