Formula: Cu5(AsO4)2(OH)4
Origin of name: Locality; the Roman name for Cornwall, England
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Light green to dark green
Diaphaneity:
Luster:
Habit: Fibrous; massive, porcelaneous
Hardness:
Specific gravity: 4.64
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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