Formula: FeFe2(SO4)4 . 22H2O
Origin of name: After locality; Bilina, Czech Republic
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: White to yellowish
Diaphanetiy:
Luster:
Habit: Radial fibrous aggregates
Hardness: 2
Specific gravity: 1.875
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Hardness approximate
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