Formula: FeCl2.2H2O
Origin of name: for Robert Kühn, German mineralogist
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: colourless
Diaphaneity: transparent
Luster:
Habit: crystals thick tabular consisting of short, flexible fibers 200 to 300 micron across
Hardness:
Specific gravity: 2.35
Cleavage: 2; {110} very good, {010} good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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