Formula: (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8
Origin of name: from orthorhombic and chamosite
Crystal system: hexagonal
Crystal class: 3m
Twinning:
Unit cell:
Colour: pale green
Diaphaneity: translucent
Luster:
Habit: fine grains
Hardness: 2
Specific gravity: 3.08
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: dimorphous with chamosite
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