Hematite vs Siderite
| Property | Hematite | Siderite |
|---|---|---|
| Formula | Fe2O3 | FeCO3 |
| Crystal System | Trigonal | Trigonal |
| Mineral Class | 04 Oxides and Hydroxides | 05 Carbonates and Nitrates |
| Mohs Hardness | 5.0-6.5 | 3.5-4.5 |
| Color | Steel-gray to black, red-brown | Yellowish-brown, gray, brown, greenish |
| Luster | Metallic | Vitreous |
| Streak | Reddish-brown | White |
| Transparency | Opaque | Translucent |
| Cleavage | None | Perfect rhombohedral {1011} |
| Fracture | Conchoidal to uneven | Conchoidal |