what is silica made from
Silica or silicon dioxide (SiO 2) is a chemical compound consisting of one silicon and two oxygen atoms.Quartz is a common mineral with the same chemical composition but quartz and silica are not synonyms.uartz is made of silica but so are also cristobalite, tridymite and few other minerals (polymorphs of silica). They are collectively referred to as silica minerals. Siliceous Devonian sandstone in Estonia. Quartz is the most common sand-forming mineral.