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Lautenthalite

Year of discovery: 1993 (Lautenthal, Germany), 2000 (Japan)

Locality list: A locality of lautenthalite

• PbCu₄(SO₄)₂(OH)₆,3H₂O
• [Pb²⁺][Cu²⁺₄][(OH)₆|(SO₄)₂]^10-,3H₂O

• Class: Sulfate - Hydroxide - Hydrate

• Pb => Ca: Devilline
• Pb => Mn: Campigliaite

• Color: Green, Blue
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Good on {001} and {010} (2 planes)
• Hardness: 2.5
• Density: 3.8

• System: Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=21.6, b=6.0, c=22.5, β=108.2