Kyanite

Al2SiO5

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Kyanite is remarkable for having variable hardness depending on crystal direction — 4.5 parallel to the length and 7 across. It is an important metamorphic index mineral indicating high-pressure conditions. Its blue color makes it a minor gemstone.

Sistema Cristalino Triclinic
Clase Mineral 09 Silicates
Dureza Mohs 4.5-7.0
Gravedad Específica 3.53-3.65
Color Blue, white, gray, green
Brillo Vitreous
Raya Colorless
Exfoliación Perfect {100}
Fractura Splintery
Transparencia Translucent
Hábito Cristalino Bladed, columnar

Dureza Mohs

Mohs Hardness: 4,5 – 7,0
1 Soft10 Hard

Sistema Cristalino

Triclinic

Frequently Asked Questions

What is the hardness of Kyanite?
Kyanite has a Mohs hardness of 4.5-7.0.
What crystal system does Kyanite belong to?
Kyanite crystallizes in the Triclinic crystal system.
What color is Kyanite?
Kyanite is typically Blue, white, gray, green.
What type of luster does Kyanite have?
Kyanite exhibits a Vitreous luster.
What is the chemical formula of Kyanite?
The chemical formula of Kyanite is Al2SiO5.