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Herbertsmithite

Year of discovery: 2003 (Los Tres Presidentes mine, Chile), 2015 (Japan)

Locality list: A locality of herbertsmithite

• Cu₃ZnCl₂(OH)₆
• [Cu²⁺₃][Zn²⁺][(OH)₆|Cl₂]^8-

• Class: Paratacamite group
• Class: Chloride - Hydroxide

• Polymorph: Kapellasite (Tirgonal, P(-3)m1)

• Zn => Cu: Atacamite, Botallackite, Clinoatacamite, Anatacamite
• Zn => (Cu,Zn): Paratacamite
• Zn => Ni: Gillardite
• Zn => Mg: Haydeeite
• Zn => Mn: Misakiite

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

• Cleavage: Good on {1011} (3 planes)
• Hardness: 3-3.5
• Density: 3.9

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=6.8, c=14.1