Formula: BiCu6(AsO4)3(OH)6 . 3H2O
Origin of name: For A. Mixa, Czech official
Crystal system: Hexagonal
Crystal class: 6/m
Twinning:
Unit cell: a = 13.63 Å, c = 5.90 Å
Colour: Emerald-green to bluish green, pale blue, pale gree,
Diaphaneity:
Luster: Brilliant, aggregates dull
Habit: Crystals acicular, elongated on c-axis, striated vertically; tufted or radiated aggregates; massive compact; cross-fibre
Hardness: 3 to 4
Specific gravity: 3.79
Cleavage: None
Tenacity:
Streak: Lighter than colour
Synonyms/varieties:
Comments:
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