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Mawsonite

Year of discovery: 1965 (Royal George mine, Australia, and North Lyell mine, Australia), 1966 (Japan)

Locality list: 14 localities of mawsonite

• Cu₆Fe₂SnS₈
• [Cu⁺₆][Fe³⁺₂][Sn⁴⁺][S₈]^16-

• Class: Mawsonite group
• Class: Sulfide
• Magnetism: Ferromagnetic

• Fe => Sn: Chatkalite

• Color: Yellowish brown
• Luster: Metallic
• Diaphaneity: Opaque

• Aggregate: Inclusion in bornite

• Cleavage: Indistinct (2 planes)
• Hardness: 3.5-4
• Density: 4.7

• System: Tetragonal
• Group: (-4)2m, P(-4)m2
• Lattice: a=7.6, c=5.4

Etymology: Sir Douglas Mawson (1882-1958), Australian geologist and explorer.