kyanite


kyanite

Silicate mineral, one of several phases in the aluminum silicate (AlSiO) system. Its colour ranges from gray-green to black or blue, with blue and blue-gray being most common. It occurs in Switzerland, Italy, the Ural Mountains, and New England (U.S.). Kyanite is a raw material in the manufacture of spark plugs. A clear, deep-blue variety is sometimes cut as a gemstone.

Variants of KYANITE

kyanite or cyanite or disthene

This entry comes from Encyclopædia Britannica Concise.
For the full entry on kyanite, visit Britannica.com.

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