kyanite
/ˈkʌɪənʌɪt
/noun [mass noun]
A blue or green crystalline mineral consisting of aluminium silicate, used in heat-resistant ceramics.Outside we saw large tables covered high with specimens of kyanite in quartz....
- However, most kyanite occurs as bladed crystals without well-developed terminations.
- Citrine and all the types of kyanite are good examples.
Derivatives
kyanitic
Origin
Late 18th century: from Greek kuanos, kuaneos 'dark blue' + -ite1.