Mandarinoite

Formula:  Fe2Se3O9 . 6H2O

Origin of name:  For J. Mandarino, American - Canadian mineralogist

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning: 

Unit cell: 

 

Colour:  Yellow-green, light green

Diaphaneity: 

Luster:  Vitreous to greasy

Habit:  Crystals elongated, < 0.5 mm, twinned

Hardness:  2.5

Specific gravity:  2.93

Cleavage:  None

Tenacity: 

Streak:  Light green

 

Synonyms/varieties:

 

Comments: 

 

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