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Borax

Colemanite is...

Question

Colemanite is a mineral of:

A

Ca

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B

B

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C

Al

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D

Ga

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Solution

The correct option is B B
Colemanite, an ore of boron is $C a_{2} B_{6} O_{11} \cdot 5 H_{2} O$ is a borate mineral found in evaporite deposits of alkaline lacustrine environments.

Colemanite is a secondary mineral that forms by alteration of borax and ulexite.
So, the correct option is (b)

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