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Quenselite

Year of discovery: 1926 (Långban, Sweden), 1993 (Japan)

Locality list: A locality of quenselite

• PbMnO₂(OH)
• [Pb²⁺][Mn³⁺][OH|O₂]^5-

• Class: Oxide - Hydroxide

• Color: Black
• Streak: Dark grayish brown
• Luster: Metallic
• Diaphaneity: Translucent-Opaque

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 2.5
• Density: 6.8

• System: Monoclinic
• Group: 2/m, P2/c
• Lattice: a=5.6, b=5.7, c=9.2, β=93.0