Pyrolusite
Pyrolusite is a mineral with the chemical formula MnO2. It has a Mohs hardness of 6-6.5 and metallic to sub-metallic luster.
Pyrolusite properties
| Type | Mineral |
|---|---|
| Chemical formula | MnO2 |
| Mohs hardness | 6-6.5 |
| Luster | Metallic to sub-metallic |
| Typical colors | Black to dark gray |
| Formation | Commonly found in manganese-rich deposits, often as a secondary mineral in weathered manganese ores. |
| Rarity | 4 / 10 |
Mohs hardness 6–6.5 — fairly hard
1 · Talc5 · Apatite10 · Diamond
Mineralyst
Wondering what you found?
Point your camera at any mineral and Mineralyst identifies it in seconds — with guided follow-up questions for a confident answer.
- Build a collection
- Keep a wish list
- 5 photos per find
- Share with friends
