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Tsumebite

Year of discovery: 1912 (Tsumeb mine, Namibia), 2009 (Japan)

Locality list: A locality of tsumebite

• Pb₂Cu(PO₄)(SO₄)(OH)
• [Pb²⁺₂][Cu²⁺][OH|SO₄|PO₄]^6-

• Class: Phosphate - Sulfate - Hydroxide
• Soluble in: HCl, HNO₃ (Slowly)

• PO₄ => AsO₄: Arsentsumebite

• Color: Green
• Streak: Pale green
• Luster: AdamantineVitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: No
• Hardness: 3.5
• Density: 6.1

• System: Monoclinic
• Group: 2/m, P2₁/m
• Lattice: a=8.7, b=5.8, c=7.9, β=111.9