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Costibite

Year of discovery: 1970 (Consols mine, Australia), 1980 (Japan)

Locality list: A locality of costibite

• CoSbS
• [Co²⁺][Sb³⁺][S]

• Class: Costibite group
• Class: Sulfide

• Polymorph: Paracostibite (Orthorhombic), Willyamite (Cubic)

• Co => Ni: Ullmannite
• Co => Ir: Tolovkite

• Sb => As: Cobaltite

• S => As: Oenite

• Color: Gray
• Luster: Metallic
• Diaphaneity: Opaque

• Aggregate: Co-exist with paracostibite as lamella inclusion in Lollingite

• Hardness: 6
• Density: 6.9

• System: Orthorhombic
• Group: mm2, Pmn2₁
• Lattice: a=3.6, b=4.9, c=5.8

Etymology: Chemical composition