| Mineral | Fayalite |
|---|---|
| Formula | Fe2+2SiO4 |
| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
| Cleavage | {010} Indistinct |
| Color | Greenish-yellow, yellow or brown |
| Density | 4.4 g/cm3 |
| Diaphaneity | Transparent, Translucent |
| Fracture | Conchoidal |
| Hardness | 6.5 - 7.0 |
| Lustre | Vitreous, Greasy |
| Streak | Colorless |
| Type Loc. | Faial Island, Azores Dist., Portugal |
| Dana 8 Class | 51.3.1.1 |
| Strunz Class | 8/A.04-20 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 450 |