Physical Properties |
|
| Chemical formula | Cu2CO3(OH)2 |
| Class | Carbonate |
| Crystal system | Monoclinic |
| Habit | Usually massive Frequently colloform or banded Botryoidal Mammillary |
| Color | Bright green |
| Hardness | 3.5 to 4 |
| Specific gravity | 3.7 to 4 |
| Cleavage | Perfect (201) |
| Fracture | Subconchoidal |
| Luster | Vitreous Silky Dull |
| Transparency | Translucent to opaque |
| Streak | Pale green |
Optical Properties |
|
| PPL | Bright green Non-pleochroic |
| XPL | Bright green |
| δ | 0.254 |
| after Perkins, 388 |
Malachite in Hand Sample
Malachite
Green malachite and blue azurite
Malachite in Thin Section
Thin Section GigaPans
Malachite, plane polars
Malachite, crossed polars
