Mineral - Romanèchite
Romanèchite
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
(Ba,H₂O)₂(Mn+4,Mn+3)₅O₁₀
Unit Cell
Physical Properties
Hardness
5 - 6
Streak
blackbrownbrown black
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
blackgray
Birefringence
Luster
Metallic
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
massive, grape-shaped
Formation
Oxidationszone von Mangan-Lagerstätten
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Romanèchite