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Minerals - Riebeckite | TerraCollect
Mineral - Riebeckite
Riebeckite
Na₂Fe²⁺₃Fe³⁺₂[(OH)₂|Si₈O₂₂]
Chemical Properties
Mineral Class
Silicates
Toxicity
Formula
Na₂Fe²⁺₃Fe³⁺₂[(OH)₂|Si₈O₂₂]
Unit Cell
Physical Properties
Hardness
5 - 6
Streak
gray
blue
blue grey
Optical Properties
Color
black
gray
blue
Birefringence
Luster
Vitreous,
Silky
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Point Group
Space Group
Habit
fibrous,
acicular,
prismatic
Formation
Metamorphose, Magmatisch
Paragenesis
Twinning
Rarity
Common
Synonyms
Riebeckite
