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
Malachite, Plane Polars
Malachite in plane polarized light. Magnification: 40x Click here to watch this grain rotate in XPL: https://youtu.be/1FbxU697BwQ Click here to explore this …
Malachite, Crossed Polars
Malachite in plane polarized light. Magnification: 40x Click here to watch this grain rotate in PPL: https://youtu.be/DlU-3ebwxKA Click here to explore this …