Ramsdellite
A variety of Minerals
What is Ramsdellite?
Ramsdellite (MnO2) is an orthorhombic manganese dioxide mineral. It is relatively uncommon, and is usually found in deposits containing other manganese oxide crystals.
Ramsdellite Market Value Calculator
Estimate the market value of Ramsdellite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Ramsdellite Localities Map
See where Ramsdellite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- black, steel-grey
- Hardness (Mohs)
- 3
- Density
- 4.79 g/cm³
- Streak
- brownish black, black
Chemical Properties
- Chemical Formula
- Mn4+O2
- Elements
- Mn, O
Also Known As
RamsdelliteManganese Oxides
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