Formula: Pb8Sn7Cu3(Bi,Sb)3S28
Origin of name: For Claude Lévy, French mineralogist
Crystal system: Monoclinic
Crystal class: 2
Twinning:
Unit cell:
Colour: Gray
Diaphaneity: Opaque
Luster: Metallic
Habit: Platy lamellae to 300 µm forming veinlets < 1 mm wide
Hardness: 2.5 to 3
Specific gravity:
Cleavage: 1; {100} very good
Tenacity:
Streak: Black
Synonyms/varieties:
Comments: Isomorphous with cylindrite
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