Jimboite

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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