What is the chemical composition of Nicol prism?

A l_{2} O_{3}

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C a S O_{4}

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C a C O_{3}

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N a_{3} A l F_{6}

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Solution

The correct option is B $C a C O_{3}$
Calcite is the most important rock-forming carbonate mineral. It's composition is $C a C O_{3}$ . It is valuable in making Nicol prisms of petrological microscopes for producing polarized light.

Hence, the correct option is $C$ .

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