Mineral - Magnesioferrite
Magnesioferrite
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
MgFe³⁺₂O₄
Unit Cell
a=8,38 Z=8
Physical Properties
Hardness
5.5 - 6.5
Streak
blackredred black
Density
Cleavage
Fracture
uneven
Tenacity
Brittle
Optical Properties
Color
blackgray
Birefringence
Luster
Metallic
Transparency
translucent,
opaque
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
Space Group
Habit
Octahedron
Formation
Magmatisch, Vulkanisch, an Fumarolen, in Basalten, in Karbonatiten, Metamorphose
Paragenesis
Twinning
Auf (111) nach dem Spinellgesetz , als Kontaktzwillinge
Rarity
Rather rare
Synonyms
Magnesioferrite
Composition
Elements
Mass
TiO₂
23,40
Al₂O₃
7,14
Fe₂O₃
24,00
Cr₂O₃
1,24
FeO
27,90
MnO
0,38
MgO
16,90
Südafrika
Groups and Members
Spinell-Supergruppe
Oxyspinell-Gruppe
Spinell-Subgruppe