Question

Which of the following mineral formulae represents a silicate?
a) FeS2
b) KAISi308
c) Fe203
d) CaSO 4.2H2O
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Answer 1

They are the largest and most important class of minerals and make up approximately 90 percent of Earth's crust. In mineralogy, silica (silicon dioxide) SiO2 is usually considered a silicate mineral. Silica is found in nature as the mineral quartz, and its polymorphs.