Aragonite vs Biotite
| Property | Aragonite | Biotite |
|---|---|---|
| Formel | CaCO3 | K(Mg,Fe)3(AlSi3O10)(OH)2 |
| Kristallsystem | Orthorhombic | Monoclinic |
| Mineralklasse | 05 Carbonates and Nitrates | 09 Silicates |
| Mohshärte | 3.5-4.0 | 2.5-3.0 |
| Farbe | Colorless, white, yellow, blue, green | Black, dark brown, dark green |
| Glanz | Vitreous | Vitreous |
| Strichfarbe | White | White to gray |
| Transparenz | Transparent | Translucent |
| Spaltbarkeit | Poor {010} | Perfect basal {001} |
| Bruch | Subconchoidal | Uneven |