Formula: Cu5(PO4)2(OH)4
Origin of name: From locality; Ludjba, Zaire
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Blue-green
Diaphaneity:
Luster: Vitreous
Habit: Blades to 0.3 mm forming aggregates
Hardness:
Specific gravity:
Cleavage: None
Tenacity:
Streak: White to pale blue
Synonyms/varieties:
Comments: Trimorphous with pseudomalachite and reichenbachite
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