• Silicon dioxide, also known as silica (from the Latin silex), is a chemical compound that is an oxide of silicon with the chemical formula SiO2.
  • It has been known since ancient times.
  • Silica is most commonly found in nature as “quartz”, as well as in various living organisms.
  • Silica is one of the most complex and most abundant families of materials, existing both as several minerals and being produced synthetically.

Source: en.wikipedia.org/wiki/Silicon_dioxide

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