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Minerals - Hollandite | TerraCollect
Mineral - Hollandite
Hollandite
Ba(Mn⁴⁺,Mn²⁺)₈O₁₆
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
Ba(Mn⁴⁺,Mn²⁺)₈O₁₆
Unit Cell
Physical Properties
Hardness
6
Streak
black
Density
Optical Properties
Color
black
gray
silver
Birefringence
Luster
Metallic
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Cleavage
Fracture
Tenacity
Point Group
Space Group
Habit
fibrous,
prismatic,
radial,
grape-shaped
Formation
Verwitterung, Metamorphose
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Hollandite
