Malachite
UNB-2017-0233Minerals » Carbonates
Description
Sample of dark green, thick stalactitic Malachite with a dull to silky lustre.
Malachite (Cu2CO3(OH)2) can be emerald-green, grass-green or dark green with an adamantine, silky or dull lustre. Streak is light green and hardness is 3 1/2 to 4. Cleavage is perfect in one direction. Malachite usually occurs as radial, fibrous, botryoidal, stalactitic, incrusting or earthy but can (rare) be long or short prismatic crystals.
Specifications
| Object name | Malachite |
|---|---|
| ID | UNB-2017-0233 |
| Legal status | Permanent collection |
| Category | Mineral |
| Classification | Mineral group: Carbonates |
| Composition |
|
| Origin | Unknown |
| Pieces | 1 |
| Partial | No |
| Measurements |
|
Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.