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Which of the following minerals does not contain aluminium ?

$\begin {array} {1 1} (A)\;Cryolite & \quad (B)\;Feldspar \\ (C)\;Beryl & \quad (D)\;Olivine \end {array}$

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Answer : Olivine
Olivine is $ (Mg , Fe)^2 SiO_4$
answered Jul 25, 2014 by thanvigandhi_1
edited Jul 28, 2014 by thanvigandhi_1

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