Mineral - Kornerupine
Kornerupine
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Mg,Fe²⁺)Al₄(Mg₃Al₂)[O₄|(OH,O)|Si₂O₇|(Si(Al,B)Si)Σ3O₁₀]
Unit Cell
Physical Properties
Hardness
6 - 7
Streak
white
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
blackbrownyellowgreenbluecolorless
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
granular, prismatic
Formation
Metamorphose
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Kornerupine