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Botallackite

Year of discovery: 1865 (Wheal cock (Botallack mines), UK), 1993 (Japan)

Locality list: 3 localities of botallackite

• Cu₂Cl(OH)₃
• (Cu,Zn)₂Cl(OH)₃
• [Cu²⁺₂][(OH)₃|Cl]^4-

• Class: Chloride - Hydroxide

• Polymorph: Anatacamite (Triclinic), Atacamite (Orthorhombic), Clinoatacamite (Monoclinic)

• Cu₂ => MnCu: Iyoite

• Cu₄ => Cu₃(Cu,Zn): Paratacamite
• Cu₄ => Cu₃Zn: Herbertsmithite, Kapellasite
• Cu₄ => Cu₃Ni: Gillardite
• Cu₄ => Cu₃Mg: Haydeeite
• Cu₄ => Cu₃Mn: Misakiite

• Color: Bluish green
• Streak: Pale green
• Luster: Vitreous
• Diaphaneity: Translucent-Transparent

• Cleavage: Distinct on {001} (1 planes)
• Density: 3.6

• System: Monoclinic
• Group: 2/m, P2₁/m
• Lattice: a=5.7, b=6.1, c=5.6, β=93.1