| Mineral | Chalcophyllite |
|---|---|
| Formula | Cu18Al2(SO4)3(AsO4)3(OH)27 · 33H2O |
| Crystal Form | Trigonal/Rhombohedral [3] |
| Cleavage | Perfect on {0001}, Slight on {10-11} |
| Color | Emerald green, Grass green, Bluish green, Blue; Green in transmitted light |
| Density | 2.7 – 2.7 g/cm3 |
| Diaphaneity | Transparent, Translucent |
| Fracture | Irregular, micaceous parting |
| Hardness | 2.0 |
| Lustre | Sub-Adamantine, Vitreous, Pearly |
| Streak | Pale green to Bluish green |
| Dana 8 Class | 43.5.14.1 |
| Strunz Class | 7/D.20-50 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 357 |