Mineral - Laurentthomasite
Laurentthomasite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
K(Mg,Fe²⁺,Mn)₂Be₂(Al,Sc)(Si₁₂O₃₀)
Unit Cell
Physical Properties
Hardness
5.5 - 6
Streak
blue
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
greenblue
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
hexagonal
Point Group
Space Group
Habit
tabular
Formation
Magmatisch, Pegmatit
Paragenesis
Twinning
Rarity
Rare
Synonyms
Laurentthomasite