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Minerals - Bixbyite-(Mn) | TerraCollect
Mineral - Bixbyite-(Mn)
Bixbyite-(Mn)
Mn³⁺₂O₃
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
Mn³⁺₂O₃
Unit Cell
a=9.41 Z=16
Physical Properties
Hardness
6 - 6.5
Streak
black
Density
Heavy (3,5-6)
Optical Properties
Color
black
Birefringence
Luster
Metallic
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
Composition
Elements
Mass
Al₂O₃
2.02
Fe₂O₃
14.86
Mn₂O₃
82.56
MgO
0.07
South Africa (Montgomery 1934)
Karten-Ebenen
Geologische Karte
Satelliten Karte
Cleavage
Imperfect after {111}
Fracture
uneven
Tenacity
Brittle
diploidal - 2/m
3
Space Group
Ia
3
(206)
Habit
Deltoidal icositetrahedron,
dodecahedron,
Hexakis octahedron,
Triacis octahedron,
Cube
Formation
hydrothermal, Metamorphose
Paragenesis
Twinning
Penetration twins after {111}
Rarity
Rather rare
Synonyms
Bixbyite-(Mn),
Bixbyite,
Manganbixbyite,
Partridgeite,
Sitaparite
