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Minerals - Tephroite | TerraCollect
Mineral - Tephroite
Tephroite
Mnâ‚‚SiOâ‚„
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Mnâ‚‚SiOâ‚„
Unit Cell
Physical Properties
Hardness
6
Streak
white
gray
gray white
Density
Optical Properties
Color
brown
gray
red
Birefringence
Luster
Vitreous,
Greasy
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Cleavage
Fracture
Tenacity
Point Group
Space Group
Habit
massive,
prismatic
Formation
Metasomatose
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Tephroite
