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Duftite

Year of discovery: 1920 (Tsumeb mine, Namibia), 1992 (Japan)

Locality list: 2 localities of duftite

• PbCuAsO₄(OH)
• [Pb²⁺][Cu²⁺][OH|AsO₄]^4-

• Class: Descloizite group
• Class: Arsenate - Hydroxide
• Variety: α-Duftite, Duftite-α (Polymorph?)

• Pb => Ca: Conichalcite (Series)

• Cu => Zn: Arsendescloizite

• AsO₄ => VO₄: Mottramite (Series)

• Color: Grayish green
• Streak: Pale green
• Luster: Resionus
• Diaphaneity: Transparent-Translucent

• Cleavage: Indistinct
• Hardness: 4.5
• Density: 6.1

• System: Orthorhombic
• Group: 222, P2₁2₁2₁
• Lattice: a=7.8, b=9.2, c=6.0

Synonym: β-Duftite, Duftite-β