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.’
- ‘Mineral resources include lead, gold, zircon, coal, uranium, and kyanite, but most of these are not fully exploited.’
- ‘The presence of kyanite in these rocks suggests that they may have experienced temperatures higher than the closure temperature of the mica, however.’
Late 18th century from Greek kuanos, kuaneos ‘dark blue’ + -ite.
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