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Baumstarkite

• AgSbS₂
• Ag(Sb,As)S₂
• [Ag⁺][Sb³⁺][S₂]^4-

• Class: Binary sulfosalts < Sulfosalt class
• Class: Sulfosalt

• Polymorph: Cuboargyrite (Cubic), Miargyrite (Monoclinic)

• Sb => Bi: Matildite, Schapbachite
• Sb => (Sb,Bi): Aramayoite
• Sb => As: Smithite, Trechmannite

• Color: Black, Dark gray
• Streak: Dark gray
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Perfect on {001} (1 plane), Good on {100} (1 plane)
• Hardness: 2.5
• Density: 5.3

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=7.8, b=8.3, c=8.8, α=100.6, β=104.0, γ=90.2