Rhodochrosite

Chemical name |  Manganese carbonate
Chemical formula |  MnCO3
Identification
Colors |  Pink, rose-red, dark-red, brown
Crystal habit |  Most often in rhombohedrons
Crystal system |  Hexagonal
Cleavage |  Perfect in three directions, forming a rhombohedron
Fracture |  Uneven, brittle
Hardness |  3½ - 4
Luster |  Vitreous, pearly
Specific gravity |  3.4 to 3.6
Streak |  White

Chesterman, pp. 435–436

## Sources[edit]

* Chesterman, Charles W. The Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf: New York (1987)