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kyanite
[ kahy-uh-nahyt ]
noun
- a mineral, aluminum silicate, Al 2 SiO 5 , occurring in blue or greenish bladed triclinic crystals, used as a refractory.
kyanite
/ ˈkaɪəˌnaɪt; ˌkaɪəˈnɪtɪk /
noun
- a grey, green, or blue mineral consisting of aluminium silicate in triclinic crystalline form. It occurs in metamorphic rocks and is used as a refractory. Formula AL 2 SiO 5
kyanite
/ kī′ə-nīt′ /
- A bluish-green to colorless triclinic mineral. Kyanite occurs as long, thin, blade-shaped crystals in metamorphic rocks. It is unique among minerals in having two grades of hardness, one along its length, and one along its width. It is a polymorph of andalusite and sillimanite, but can form at lower temperatures than either of these. Chemical formula: Al 2 SiO 5 .
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Derived Forms
- kyanitic, adjective
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Word History and Origins
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Example Sentences
In mica-gneisses sillimanite, kyanite, andalusite and garnet may occur.
From Project Gutenberg
Kyanite and staurolite may also be mentioned as occasionally occurring.
From Project Gutenberg
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