Chapter 3 Metals and Non-metals

“All ores are minerals but all minerals are not ores ” why ?

SolutionAll minerals are ores, but not all minerals are ores because some of them may contain significant amounts of undesirable materials like sand, stones, and earthly impurities. For instance: Clay and bauxite, two minerals that contain aluminium, are found in the crust of the earth. Only bauxite can be used to efficiently and profitably extract …

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What is gangue ?

Gangue is generally an unwanted material or impurity that is present in an ore. or , Gangue- the impurities present in ore such as sand rock etc is known as gangue. Common silicate, oxide, carbonate, and sulphate minerals that lack sufficient concentrations of valuable metals make up gangue minerals.