Mineral - Carnallite
Carnallite
Chemical Properties
Mineral Class
Halides
Toxicity
none
Formula
KMgCl₃·6H₂O
Unit Cell
Physical Properties
Hardness
1 - 2
Streak
white
Density
Light (<2)
Cleavage
Fracture
Tenacity
Optical Properties
Color
redbluecolorless
Birefringence
0.030
Luster
Vitreous,
Greasy
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
orthorhombic-dipyramidal - 2/m 2/m 2/m
Space Group
Pnna (52)
Habit
granular, massive, pyramidal, tabular
Formation
Evaporite
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Carnallite