About Ramsdellite
A polymorph of manganese dioxide, typically black or steel-grey. It's a stone of transformation and grounding, repelling negativity and providing strength.
Primary Hues
Iron-Black, Steel-Grey, forms prismatic crystals or fibrous masses
Geological & Scientific Details
Ramsdellite is classified as a oxide minerals mineral which typically crystallizes in the orthorhombic system. Its chemical formula is MnO2. Common crystal habits include granular / massive-fibrous / platy.
Key Geological Properties:
- Mineral Category: Oxide minerals
- Chemical Formula: MnO2
- IMA Symbol: Rmd[1]
- Crystal System: Orthorhombic
- Formula Mass (g/mol): 86.94 gm (Mn 63.19% O 36.81%)
- Predominant Geological Color: Iron black, Black, Steel gray
- Crystal Habit: Granular / Massive-Fibrous / Platy
- Cleavage: Good
- Luster: Metallic
- Streak: Brownish black
- Diaphaneity: Opaque
Associated Minerals
- Pyrolusite
- Nsutite
- Cryptomelane
- Birnessite
- Hollandite