cyanite
noun
cy·a·nite
| \ ˈsīəˌnīt\
variants:
or less commonly kyanite \ ˈkī- \
plural -s
Definition of cyanite
: a mineral Al2SiO5 consisting of an aluminum silicate occurring commonly in blue thin-bladed triclinic crystals and crystalline aggregates
— called also disthene
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