Question : What is the peculiar character of allochromatic minerals?
Option 1: These minerals are coloured due to impurities.
Option 2: These minerals are naturally-coloured minerals without any impurities.
Option 3: These minerals are naturally colourless minerals.
Option 4: These minerals are colourless and very explosive.
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Correct Answer: These minerals are coloured due to impurities.
Solution : The correct option is These minerals are coloured due to impurities.
Minerals known as allochromatic minerals get their colour from trace elements or impurities in the material. These impurities can take the place of specific elements in the crystal lattice structure of the mineral, resulting in the absorption or reflection of particular light wavelengths and the mineral's distinctive colour.
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