Formula: Zn5(OH)8Cl2.H2O
Origin of name: for Werner Simon and Kurt Kolle, German mineral collectors
Crystal system: hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: colourless
Diaphaneity: transparent to translucent
Luster: vitreous
Habit: crystals tabular to lamellar, hexagonal, to 1 mm
Hardness: 1.5
Specific gravity: 3.20
Cleavage: 1; {0001} perfect
Tenacity:
Streak: white
Synonyms/varieties:
Comments: soluble in dilute acids
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