Manganese Oxide (maybe with Fe)
Mn2O3 (maybe with Fe)
Chemical name
Manganese Oxide (maybe with Fe)
Mineral name
Bixbyite
Chemical formula
Mn2O3 (maybe with Fe)
Crystal system
cubic
Crystal Class
cubic-diploidal (2/m -3)
Space Group
Ia3
Unit cell
a [Å]:9.41
b [Å]:9.41
c [Å]:9.41
Molecular weight [g/mol]
158,31
Formula units
Z=16
Twinning
penetration twinning on {111}
Mohs hardness
6 - 6.5
Density [g/cm3]
4.95
Cleavage
imperfect on {111}
Fracture / Tenacity
uneven to conchoidal
Color
black
Streak
black
Transparency
opaque
Luster
metallic
Optical character
isotropic
