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What is a metal ore? An ore is any kind of rock or mineral from which a metal can be profitably extracted. Metals are rarely found uncombined (as elements) in nature. They are nearly always present in the forms of compounds, often where the metal is chemically joined with oxygen. Only the most unreactive metals, like silver and gold will be found pure. The most common metals are oxides and sulphides. Ores are rocks from which we extract metals. Metals are found naturally in rocks called ores. They are in compounds, chemically bonded to other elements. However, the unreactive metals are at the bottom of the reactivity series can be found as the elements themselves. We say they are found native. We can find copper, silver, gold and platinum as the metals in nature. What factors do companies consider when deciding whether to extract a metal from its ore? There are many different...

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