Mineral - Natrolite
Natrolite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Na₂[Al₂Si₃O₁₀]·2H₂O
Unit Cell
Physical Properties
Hardness
5 - 5.5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whiteyellowcolorless
Birefringence
Luster
Vitreous,
Silky
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic , orthorhombic
Point Group
Space Group
Habit
acicular, prismatic, radial
Formation
hydrothermal
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Natrolite