Mineral - Vuonnemite
Vuonnemite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Na₁₁Ti⁴⁺Nb₂(Si₂O₇)₂(PO₄)₂O₃(F,OH)
Unit Cell
Physical Properties
Hardness
2 - 3
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
brownyellow
Birefringence
Luster
Vitreous,
Greasy
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
triclinic
Point Group
Space Group
Habit
massive, tabular
Formation
Magmatisch
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Vuonnemite