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Amorphous aluminosilicate minerals like allophane have negative charge which is partly...

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Amorphous aluminosilicate minerals like allophane have . . . . . . . . negative charge, which is partly or entirely balanced by complex aluminium cation

Answer & Solution
Correct Answer: Option C
Allophane is amorphous to poorly crystalline hydrous aluminum silicate mineraloids. Its chemical formula is Al2O3·(SiO2)1.3-2·(H2O)2.5-3 . It is produced by weathering or hydrothermal alteration of volcanic glass or feldspars. It has a large negative charge, which is balanced by aluminium cation.
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