Malachite
UNB-2017-0214Minerals » Carbonates
Description
Pale-green botryoidal Malachite crystals with a silky lustre. Largest crystal has a diameter of 1.6 cm.
Malachite (Cu2CO3(OH)2) can be emerald-green, grass-green to dark-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 is usually radial, fibrous, botryoidal, stalactitic, incrusting or earthy but can be (rare) long or short prismatic crystals.
Specifications
| Object name | Malachite |
|---|---|
| ID | UNB-2017-0214 |
| Legal status | Permanent collection |
| Category | Mineral |
| Classification | Mineral group: Carbonates |
| Composition |
|
| Origin | Morenci, Arizona, U.S.A. |
| Pieces | 1 |
| Partial | No |
| Measurements |
|
Map of Origin
Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.