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Preisingerite

Year of discovery: 1981 (San Francisco de los Andes mine, Argentina), 2005 (Japan)

Locality list: A locality of preisingerite

• Bi₃(AsO₄)₂O(OH)
• [Bi³⁺₃][OH|O|(AsO₄)₂]^9-

• Class: Arsenate - Oxide - Hydroxide

• AsO₄ => PO₄: Petitjeanite (Series)
• AsO₄ => VO₄: Schumacherite (Series)

• Color: White, Greenish gray
• Streak: White
• Luster: Sub-Adamantine
• Diaphaneity: Translucent

• Cleavage: No
• Hardness: 3-4
• Density: 7.2

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=10.0, b=7.4, c=6.9, α=87.8, β=115.0, γ=111.1