Mineral - Eudidymite
Eudidymite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Na₂Be₂Si₆O₁₅·H₂O
Unit Cell
Physical Properties
Hardness
6
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitegrayyellowcolorless
Birefringence
Luster
Vitreous,
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
prismatic, tabular
Formation
Magmatisch, Pegmatit
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Eudidymite