The trigonal crystallized silica of SiO2 is known as Quartz and is one of the most common crystals on earth's surface. It has an hexagonal structure made of ,
Quartz is a very pure crystal and contains only traces of other elements. Natural quartz contain:
Density: 2.65 g/cm3
Mineral class: Oxides/hydroxides
PiezoelectricityQuartz shows a strong piezoelectric effect perpendicularly to the prism axis. Applying pressure on a quartz crystal generates an electrical polarization along the pressure direction. Alternatively, applying an electrical tension leads to a mechanical deformation of the crystal.
Last updated 21 July 2006