Calcite vs Pyrite
| Property | Calcite | Pyrite |
|---|---|---|
| Formula | CaCO3 | FeS2 |
| Crystal System | Trigonal | Cubic (Isometric) |
| Mineral Class | 05 Carbonates and Nitrates | 02 Sulfides and Sulfosalts |
| Mohs Hardness | 3.0 | 6.0-6.5 |
| Color | Colorless, white, yellow, orange, blue, green | Pale brass-yellow |
| Luster | Vitreous | Metallic |
| Streak | White | Greenish-black to brownish-black |
| Transparency | Transparent | Opaque |
| Cleavage | Perfect rhombohedral {1011} | Indistinct |
| Fracture | Conchoidal | Conchoidal to uneven |