Chalcopyrite vs Wolframite
| Property | Chalcopyrite | Wolframite |
|---|---|---|
| Formula | CuFeS2 | (Fe,Mn)WO4 |
| Crystal System | Tetragonal | Monoclinic |
| Mineral Class | 02 Sulfides and Sulfosalts | 07 Sulfates, Chromates, Molybdates, and Tungstates |
| Mohs Hardness | 3.5-4.0 | 4.0-4.5 |
| Color | Brass-yellow, often with iridescent tarnish | Black, dark brown |
| Luster | Metallic | Submetallic |
| Streak | Greenish-black | Dark reddish-brown |
| Transparency | Opaque | Opaque |
| Cleavage | Poor | Perfect {010} |
| Fracture | Conchoidal to uneven | Uneven |