Q. Quartz is made of:
Answer: Sodium Silicate
Notes: Quartz is an abundant mineral in the Earth’s continental crust. It is made up of a continuous framework of SiO4, silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. There are many different varieties of quartz, several of which are semi-precious gemstones. Most quartz used in microelectronics is produced synthetically. The process involves treating crushed natural quartz with hot aqueous solution of a base such as sodium hydroxide forming sodium silicate.