Quartz vs Sphalerite
| Property | Quartz | Sphalerite |
|---|---|---|
| Formula | SiO2 | ZnS |
| Crystal System | Trigonal | Cubic (Isometric) |
| Mineral Class | 09 Silicates | 02 Sulfides and Sulfosalts |
| Mohs Hardness | 7.0 | 3.5-4.0 |
| Color | Colorless, white, purple, pink, brown, black | Yellow, brown, black, red, green |
| Luster | Vitreous | Adamantine |
| Streak | White | White to yellow-brown |
| Transparency | Transparent | Translucent |
| Cleavage | None | Perfect dodecahedral {110} |
| Fracture | Conchoidal | Conchoidal |