Formula: MnMn2O4
Origin of name: For J. Hausmann, German mineralogist
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: Brownish black
Diaphaneity: Opaque
Luster: Submetallic
Habit: Crystals pseudo-octahedral; massive, granular
Hardness: 5.5
Specific gravity: 4.84
Cleavage: 3; {001} nearly perfect; {112} and {001} indistinct
Tenacity:
Streak: Brown
Synonyms/varieties:
Comments:
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