Mineral - Burkeite
Burkeite
Chemical Properties
Mineral Class
Sulphates
Toxicity
none
Formula
Na₆(CO₃)(SO₄)₂
Unit Cell
Physical Properties
Hardness
3.5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitegrayyellow
Birefringence
Luster
Vitreous,
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
spherical, massive, tabular
Formation
Sedimentär, Evaporit
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Burkeite