Rhodochrosite
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| Rhodochrosite | |
|---|---|
| Chemical name | Manganese carbonate |
| Chemical formula | MnCO3 |
| Identification | |
| Crystal habit | Most often in rhombohedrons |
| Crystal system | Hexagonal |
| Cleavage | Perfect in three directions, forming a rhombohedron |
| Fracture | uneven, brittle |
| Hardness | 3 1/2 - 4 |
| Luster | Vitreous, pearly |
| Specific gravity | 3.4 to 3.6 |
| Streak | white |
Chesterman, pp. 435-436
Sources
- Chesterman, Charles W. The Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf: New York (1987)