Cu2Cl(OH)3Orthorhombic
Atacamite
Cu2Cl(OH)3
HalidesChemical FormulaCu2Cl(OH)3
Crystal SystemOrthorhombic
Mohs Hardness3.5
Specific Gravity3.75
ColorBright green to dark green
LusterAdamantine to vitreous
StreakGreen
CleavageOne direction
FractureUneven
Occurrence
Found in oxidized copper deposits in arid regions. Source of copper.