Mineral - Gahnite
Gahnite
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
ZnAl₂O₄
Unit Cell
Physical Properties
Hardness
7.5 - 8
Streak
white
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
blackbrownblue
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
Space Group
Habit
Octahedron, Cube
Formation
Magmatisch, Metamorphose
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Gahnite