Manganosite
A variety of Minerals
What is Manganosite?
Manganosite is a rare mineral composed of manganese(II) oxide MnO. It was first described in 1817 for an occurrence in the Harz Mountains, Saxony-Anhalt, Germany. It has also been reported from Langban and Nordmark, Sweden and at Franklin Furnace, New Jersey. It also occurs in Japan, Kyrgyzstan and Burkina Faso. It occurs in manganese nodules. It also occurs as alteration of manganese minerals such as rhodocrosite during low oxygen metamorphism and metasomatism.
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Manganosite Localities Map
See where Manganosite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Emerald-green, darkening on exposure to black
- Hardness (Mohs)
- 5.5
- Density
- 5.36 g/cm³
- Streak
- Brown
Chemical Properties
- Chemical Formula
- MnO
- Elements
- Mn, O
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