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Roxbyite

Year of discovery: 1988 (Olympic Dam mine, Australia), 2002 (Japan)

Locality list: A locality of roxbyite

• Cu₉S₅

• Class: Chalcocite group
• Class: Sulfide
• Formed by alteration of Djurleite.

• Polymorph: Digenite (Trigonal)

• Color: Bluish black
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Poor on {100} (1 plane)
• Hardness: 2.5-3
• Density: 5.6

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=53.8, b=30.9, c=13.4, β=90.0