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Question

Which of the following minerals does not contain Al?

A
Mica
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B
Cryolite
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C
Felspar
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D
Flourospar
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Solution

The correct option is D Flourospar
Fluorspar is CaF2.
Mica is a common name for a complex compound of a lot of metals, which include Al.
Cryolite is Na3AlF6.
Felspar is a name for a group of crystalline materials, principally aluminosilicates of potassium, sodium and calcium.

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