About Pyrolusite
Manganese dioxide, the most common manganese mineral, typically black and often forming dendritic patterns or sooty masses (can soil hands). It's a stone of transformation, optimism, and repelling negativity.
Primary Hues
Iron-Black, Steel-Grey, Bluish-Grey, often forms dendritic (fern-like) patterns or massive, sooty (can soil fingers)
Geological & Scientific Details
Pyrolusite is classified as a oxide minerals mineral which typically crystallizes in the tetragonal system. Its chemical formula is MnO2. Common crystal habits include granular to massive: botryoidal. crystals rare.
Key Geological Properties:
- Mineral Category: Oxide minerals
- Chemical Formula: MnO2
- IMA Symbol: Pyl[1]
- Crystal System: Tetragonal
- Predominant Geological Color: Darkish, black to lighter grey, sometimes bluish
- Crystal Habit: Granular to massive: botryoidal. Crystals rare
- Twinning: {031}, {032} may be polysynthetic
- Cleavage: Perfect on 110
- Luster: Metallic, dull to earthy
- Streak: Black to bluish-black
Associated Minerals
- Manganite
- Romanechite
- Psilomelane
- Braunite
- Hausmannite
- Rhodochrosite
- Barite
- Quartz