Most metals do not occur in their natural state. They are often found as compounds such as metal oxides, sulfides and halides. Aluminium oxide is the main metal compound present in the ore known as bauxite. Iron pyrites or 'fool's gold' is mainly iron sulfide.
Most metals do not occur in their natural state. They are often found as compounds such as metal oxides, sulfides and halides.
Aluminium oxide is the main metal compound present in the ore known as bauxite. Iron pyrites or 'fool's gold' is mainly iron sulfide.
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