Mineral - Delhayelite
Delhayelite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Na,K)₁₀Ca₅Al₆Si₃₂O₈₀(Cl₂,F₂,SO₄)₃ · 18H₂O
Unit Cell
Physical Properties
Hardness
4
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
browngraysilver
Birefringence
Luster
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
leafy, coarse, massive, tabular
Formation
Magmatisch
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Delhayelite