Formula: Cu6Zn3As4S12
Origin of name: for W. Nowacki, Swiss crystallographer
Crystal system: hexagonal
Crystal class: 3
Twinning:
Unit cell:
Colour: lead-gray, black
Diaphaneity: opaque
Luster: metallic
Habit: crystals to 0.3 mm
Hardness:
Specific gravity: 4.3
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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