Ice Ic

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Ice I_c is a metastable cubic crystalline variant of ice. The oxygen atoms are arranged in a diamond structure. It is produced at temperatures between 130-150 K, and is stable for up to 200 K, when it transforms into ice I_h. It is occasionally present in the upper atmosphere.

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

[edit] References

• Chaplin, Martin (2007-07-16). Cubic ice. Water Structure and Science. Retrieved on 2008-01-02.

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