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 AL2SiO5
Derived forms
kyanitic (ˌkaɪəˈnɪtɪk)
adjective
kyanite in American English
(ˈkaɪəˌnaɪt)
noun
a bluish silicate of aluminum, Al2SiO5, that forms in long, thin, bladed crystals that are found in metamorphic rocks