Mineral - Ramsdellite
Ramsdellite
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
Mn⁴⁺O₂
Unit Cell
Physical Properties
Hardness
3
Streak
blackbrownbrown black
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
blackgray
Birefringence
Luster
Metallic
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
leafy, fibrous, acicular
Formation
Oxidationszone von Mangan-Lagerstätten, Dehydrierung aus Groutit
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Ramsdellite