Mineral - Cahnite
Cahnite
Chemical Properties
Mineral Class
Borates
Toxicity
low
Formula
Ca₂[B(OH)₄](AsO₄)
Unit Cell
Physical Properties
Hardness
3
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitebrownyellow
Birefringence
0.001
Luster
Vitreous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
tetragonal
Point Group
tetragonal-disphenoidal - 4
Space Group
P 4 (81)
Habit
pyramidal
Formation
Metasomatism
Paragenesis
Twinning
Rarity
Rare
Synonyms
Cahnite