Malachite
UNB-2017-0124Minerals » Carbonates
Description
Three samples of polished Malachite with mammilary crystal habit. Emerald-green colour. Only one sample is in the location, other two samples are missing.
Malachite (Cu2CO3(OH)2) can be emerald-green, grass-green or dark in green in colour. Lustre can be adamantine, silky or dull and streak is light green. Hardness is 3 1/2 to 4 and cleavage is perfect in one direction crosswise. Malachite usually occurs as radial, fibrous, botryoidal, stalactitic, incrusting or earthy form. Malachite can also occurs as crystals (rare) and be long or short prismatic forms.
Specifications
| Object name | Malachite |
|---|---|
| ID | UNB-2017-0124 |
| Legal status | Permanent collection |
| Category | Mineral |
| Classification | Mineral group: Carbonates |
| Composition |
|
| Origin | Democratic Republic of the Congo |
| Pieces | 3 |
| Partial | No |
| Measurements |
Map of Origin
Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.