Formula: Mn3B2O6
Origin of name: For K. Jimbo, Japanese mineralogist
Crystal system: Orthorhombic
Crystal class: mm2 or 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Light purplish brown
Diaphaneity:
Luster: Vitreous
Habit: Massive
Hardness: 5.5
Specific gravity: 3.98
Cleavage: 2; {110} perfect, {101} parting
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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