Formula: FeO(OH)
Origin of name: From iron ferric iron (Fe3+) and water (Latin hydor)
Crystal system: Hexagonal
Crystal class: -3m
Twinning:
Unit cell:
Colour: Yellow-brown to dark brown
Diaphaneity:
Luster:
Habit: Ocherous; massive
Hardness:
Specific gravity: 3.80
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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