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Pääkkönenite, Paakkonenite

Year of discovery: 1981 (Kalliosalo, Finland), 2013 (Japan)

Locality list: A locality of pääkkönenite

• Sb₂AsS₂
• [Sb³⁺₂][S₂|As]

• Class: Arsenide - Sulfide

• Sb => S: Getchellite

• As => S: Stibnite, Metastibnite

• Sb₂ => AsS: Orpiment

• Color: Gray
• Streak: Grayish brown
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Distinct (1 plane)
• Hardness: 2.5
• Density: 5.2

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=10.8, b=4.0, c=12.5, β=115.3