Specularite
Varietyof Hematite
Specularite is platy hematite with a metallic, mirror-like luster. As a variety of Hematite, it shares that species' composition (Fe2O3), crystal structure, and hardness; the distinction is the appearance defined above.
Photos
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About Hematite
Full reference data — crystallography, X-ray diffraction, and cited physical properties — is on the Hematite species page.
| Formula | Fe2O3 |
|---|---|
| Hardness (Mohs) | 5.5-6.5 |
| Specific gravity | 4.9-5.5 |
| Density (calculated) | 5.27 |
| Crystal system | trigonal |
| Color range | black, gray, red |
| Luster | metallic |
| Streak | brown, red |