Staurolite vs Wolframite
| Property | Staurolite | Wolframite |
|---|---|---|
| Formula | Fe2Al9Si4O23(OH) | (Fe,Mn)WO4 |
| Crystal System | Monoclinic | Monoclinic |
| Mineral Class | 09 Silicates | 07 Sulfates, Chromates, Molybdates, and Tungstates |
| Mohs Hardness | 7.0-7.5 | 4.0-4.5 |
| Color | Dark reddish-brown to black | Black, dark brown |
| Luster | Vitreous | Submetallic |
| Streak | Gray to white | Dark reddish-brown |
| Transparency | Translucent | Opaque |
| Cleavage | Poor {010} | Perfect {010} |
| Fracture | Subconchoidal | Uneven |