Aragonite vs Kyanite
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| Property | Aragonite | Kyanite |
|---|---|---|
| Formula | CaCO3 | Al2SiO5 |
| Crystal System | Orthorhombic | Triclinic |
| Mineral Class | 05 Carbonates and Nitrates | 09 Silicates |
| Mohs Hardness | 3.5-4.0 | 4.5-7.0 |
| Color | Colorless, white, yellow, blue, green | Blue, white, gray, green |
| Luster | Vitreous | Vitreous |
| Streak | White | Colorless |
| Transparency | Transparent | Translucent |
| Cleavage | Poor {010} | Perfect {100} |
| Fracture | Subconchoidal | Splintery |