Roger Weller, geology instructor
wellerr@cochise.edu
copyright 2006-R.Weller
Mineral
Information on:
kyanite
Chemical Group:
silicate
Chemical Formula:
Al2SiO5
Color: patchy blue, white, gray, green
Streak: white
Luster: vitreous to pearly
Hardness: 4 to 5 in one
direction, 6 to 7 in another direction
Specific Gravity: 3.63
Fracture:
Cleavage: 2 directions, one perfect and the other good
Crystal Forms and Habits: Triclinic system
Mineral Associations: a metamorphic mineral, commonly formed in schists
Identifying Characteristics: distinct blue color
Uses: in the production of refractory materials
If very colorful and transparent it may be faceted as a
gemstone
Occurrences: Virginia, South Carolina, Brazil
Toxicity: when-swallowed- low
when inhaled- high
Additional Information: