Mineral - Leifite
Leifite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Na,H₂O)Na₆[Be₂Al₂(Al,Si)Si₁₅O₃₉]F₂
Unit Cell
Physical Properties
Hardness
6
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitecolorless
Birefringence
Luster
Silky
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
trigonal
Point Group
Space Group
Habit
fibrous, spherical, acicular, prismatic
Formation
Magmatisch, Pegmatit
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Leifite