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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