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Clinoatacamite

Year of discovery: 1996 (Chuquicamata mine, Chile), 2015 (Japan)

Locality list: A locality of clinoatacamite

• Cu₂Cl(OH)₃
• [Cu²⁺₂][(OH)₃|Cl]^4-

• Class: Paratacamite group
• Class: Chloride - Hydroxide

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

• Cu₂ => MnCu: Iyoite

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

• Color: Green, Dark green
• Streak: Pale green
• Luster: Adamantine
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {012} (1 plane)
• Hardness: 3
• Density: 3.7

• System: Monoclinic
• Group: 2/m
• Lattice: a=6.2, b=6.8, c=9.1, β=99.7

Etymology: Atacama desert, Chile