Formula: CoSb3
Origin of name: For Cornelius Kieft, Dutch mineralogist
Crystal system: Cubic
Crystal class: 2/m -3
Twinning:
Unit cell:
Colour: Tin white
Diaphaneity: Opaque
Luster: Metallic
Habit: Euhedral to subhedral equant crystals to 400 µm
Hardness: 5
Specific gravity: 7.2
Cleavage: None
Tenacity:
Streak: Grey
Synonyms/varieties:
Comments:
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