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Richelsdorfite

Year of discovery: 1982 (Wilhelm mine, Germany), 2002 (Japan)

Locality list: A locality of richelsdorfite

• Ca₂Cu₅Sb(AsO₄)₄Cl(OH)₆,6H₂O
• [Ca²⁺₂][Cu²⁺₅][Sb⁵⁺][(OH)₆|Cl|(AsO₄)₄]^19-,6H₂O

• Class: Richelsdorfite group
• Class: Arsenate - Chloride - Hydroxide - Hydrate

• Sb(AsO₄)₄ => Bi(PO₄)₄: Bleasdaleite

• Color: Blue
• Streak: Greenish blue
• Luster: Vitreous
• Diaphaneity: Opaque

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 2
• Density: 3.3

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=14.1, b=14.2, c=13.5, β=101.1