Ice VIII

Ice VIII is a tetragonal crystalline form of ice formed from ice VII by cooling it below 5 °C. It is more ordered than ice VII, since the hydrogen atoms assume fixed positions.

Ordinary water ice is known as ice I_h, (in the Bridgman nomenclature). Different types of ice, from ice II to ice XVIII, have been created in the laboratory at different temperatures and pressures.

• 
  The crystal structure of ice VIII

See also

• Ice, for other crystalline forms of ice

References

• Chaplin, Martin (July 1, 2007). "Ice-eight structure". Water Structure and Science. Retrieved January 2, 2008.