Formula: (Zn,Mg,Mn)Fe(SO4)2(OH) .7H2O
Origin of name: from zinc and Botryogen
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 10.488, b = 17.819, c = 7.185, β = 100.833°
Colour: Orange-red
Diaphaneity: Transparent to translucent
Luster: Vitreous to Greasy
Habit: Crystals prismatic; radiating crystalline aggregates
Hardness: ~2.5
Specific gravity: 2.20
Cleavage: None
Tenacity:
Streak: Light yellow
Synonyms/varieties:
Comments:
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