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Vauquelinite

Year of discovery: 1818 (Tsvetnoi mine, Russia), 2005 (Japan)

Locality list: A locality of vauquelinite

• Pb₂Cu(CrO₄)(PO₄)(OH)
• [Pb²⁺₂][Cu²⁺][OH|CrO₄|PO₄]^6-

• Class: Phosphate - Chromate - Hydroxide
• Soluble in: HNO₃ (Partially)
• Formed by alteration of Pyromorphite.
• Incrustation pseudomorph: Replace Dolomite.

• PO₄ => AsO₄: Fornacite (Series)

• Color: Brownish green, Green, Dark brown
• Streak: Pale brown, Pale green
• Luster: Adamantine
• Diaphaneity: Translucent

• Cleavage: Indistinct
• Hardness: 2.5-3
• Density: 6.2

• System: Monoclinic
• Group: 2/m, P2₁/n
• Lattice: a=13.8, b=5.8, c=9.6, β=94.6