Amazonite vs Chalcopyrite
| Property | Amazonite | Chalcopyrite |
|---|---|---|
| Formula | KAlSi3O8 | CuFeS2 |
| Crystal System | Triclinic | Tetragonal |
| Mineral Class | 09 Silicates | 02 Sulfides and Sulfosalts |
| Mohs Hardness | 6.0-6.5 | 3.5-4.0 |
| Color | Green, blue-green | Brass-yellow, often with iridescent tarnish |
| Luster | Vitreous | Metallic |
| Streak | White | Greenish-black |
| Transparency | Translucent | Opaque |
| Cleavage | Perfect {001}, good {010} | Poor |
| Fracture | Conchoidal to uneven | Conchoidal to uneven |