Malachite
| Formula | Cu2(CO3)(OH)2 |
| Origin | Katanga (Congo) |
| Description | phallus-like masses of malachite |
| Classification (Lapis) | Carbonates |
| Crystal System | monoclinic |
| Hardness | 3,5 – 4,0 |
| Colour | bright green, dark green, blackish green, commonly banded in masses; green to yellowish green in transmitted light |
| Streak | pale green |
| Luminescence | |
| Luster | vitreous |
| Transparency (Opacity) | translucent |
| Cleavage | perfect |
| Fracture | subconchoidal to uneven |
| Magnetism | negative |
| Geological Setting | a common secondary mineral formed in the oxidation zone of copper deposits |
| Specific Gravity | 3,98 g/cm3 |
