Fool's gold
Trade name
Fool's gold is the traditional nickname for pyrite.
Photos
About Pyrite
Full reference data — crystallography, X-ray diffraction, and cited physical properties — is on the Pyrite species page.
| Formula | FeS2 |
|---|---|
| Hardness (Mohs) | 6-6.5 |
| Specific gravity | 4.95-5.1 |
| Density (calculated) | 5.016 |
| Crystal system | cubic |
| Color range | yellow |
| Luster | metallic |
| Streak | black, brown, green |