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The following is a list of the more common types of silicate glasses, and their ingredients, properties, and applications: Fused quartz, also called fused silica glass, vitreous silica glass, is silica (SiO2) in vitreous or glass form (i.e., its molecules are disordered and random, without crystalline structure).
The most glass you encounter is silicate glass, which consists mainly of silica or silicon dioxide, SiO2. This is the type of glass you find in windows and drinking glasses. The crystalline form of this mineral is quartz. When the solid material is non-crystalline, it is a glass. You can make glass by melting silica-based sand. Natural forms of silicate glass also exist. Impurities or additional elements and compounds added to the silicate change the color and other properties of the glass.