Mineral - Murmanite
Murmanite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Na₂Ti₂(Si₂O₇)O₂ · 2H₂O
Unit Cell
Physical Properties
Hardness
2.5 - 3
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
pinkviolet
Birefringence
Luster
Vitreous,
Greasy
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
triclinic
Point Group
Space Group
Habit
leafy, tabular
Formation
Magmatisch (Vulkanite, Pegmatite), Sekundär aus Lomonosovit
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Murmanite