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Option 4 : All (A), (B), (C) and (D)
Graphite, salt, limestone and mica are the examples of minerals.
- A naturally occurring substance that has a definite chemical composition is known as a mineral.
- On the basis of composition, minerals are classified mainly as metallic and non-metallic minerals.
- Some of the examples of minerals are:
- Graphite - It is a type of mineral found in metamorphic and igneous rocks.
- Salt - It is a mineral composed primarily of sodium chloride (NaCl).
- Limestone - It is a rock mineral that can be mined from sedimentary rocks.
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Mica - It is a shiny and non-metallic mineral used in electrical industry.
Hence, we can conclude that All (A), (B), (C) and (D) is the correct answer.
- Metallic minerals:
- Metallic minerals contain metal in raw form.
- Metals are hard substances that conduct heat and electricity and have a characteristic lustre or shine.
- Iron ore, bauxite, manganese ore are some examples.
- Metallic minerals may be ferrous or non-ferrous.
- Non-metallic minerals:
- Non-metallic minerals do not contain metals.
- Limestone, mica and gypsum are examples of such minerals.
- The mineral fuels like coal and petroleum are also non-metallic minerals.
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