Formula: CuNiBiS3
Origin of name: For Arno Mücke, German mineralogist
Crystal system: Orthorhombic
Crystal class: 222
Twinning:
Unit cell:
Colour: Light gray with orange tint
Diaphaneity:
Luster: Metallic
Habit: Subhedral to euhedral tabular crystals to 1 mm long
Hardness: 3.5
Specific gravity: 5.88
Cleavage: 1; {010} very good
Tenacity:
Streak: Grey-black
Synonyms/varieties:
Comments: Bismuth analogue of lapieite
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