What is Kyanite’s formula?
Al2SiO5
What is Kyanite’s hardness?
5 parallel to c and 7 on {100} cleavage
What is Kyanite’s cleavage?
{100} perfect
{010} good
What is Kyanite’s occurrence?
pelitic metamorphic rocks
What is Kyanite’s crystal system?
triclinic
What is Kyanite’s P/T?
high pressure