Natural Indian Minerals
Kyanite Minerals

Name and Composition - Aluminum silicate: AI2SiO5.

Physical Properties - Occurs as light blue, sometimes white coloured long and thin bladed crystals; hardness : 5.5-7.0 and sp. gr. 3.58-3.65.

Mode of Occurrence - Occurs at the contacts of regionally metamorphosed rocks resulting from thermal metamorphism of pelitic rocks.

Uses - In refractory and ceramic industries.

Mineral based Industries – There is no mineral based industry in the state.

Industrial Prospects – Nil, as there is no production of kyanite.


Physical Properties
Hardness
Sp. gr.
Luster
Fracture
Streak
4.5 - 7
3.53 - 3.65
Vitreous to pearly
Splintery
White, colorless
Chemical Properties
Chemical Composition
Crystal System
Diaphaneity
Al2SiO5
Triclinic
Transparent to translucent
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