Kyanite
Al₂OSiO₄
Nesosilicate mineral
Properties
- Chemical formula
- Al₂OSiO₄
- Group
- Silicates
- Crystal system
- Triclinic
- Hardness (Mohs)
- 4,5–7,5
- Color
- Blue
- Luster
- —
- Streak
- White
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- —
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.AF.15
- Dana classification
- 52.2.2c.1
- IMA status
- Approved mineral and/or valid name (A)
- IMA symbol
- Ky
- Locality
- 🇦🇹 Austria
- Type locality
- —
- Discovery year
- —
Etymology
Named after dark blue
Source: Wikidata
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