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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sajan sarthak
Nepheline and Leucite are silica undersaturated minerals (low silica) content, Leucite has relatively more silica than Nepheline. Nepheline- NaAlSiO4 Leucite- KAlSi2O6 Hypersthene- (Mg,Fe)2Si2O6 Orthoclase- KAlSi3O8. option A should be the answer