Cu2CO3(OH)2Monoclinic
Malachite
Cu2CO3(OH)2
CarbonatesChemical FormulaCu2CO3(OH)2
Crystal SystemMonoclinic
Mohs Hardness4
Specific Gravity4.03
ColorBright green, banded
LusterVitreous to silky
StreakGreen
CleavageOne direction
FractureUneven
Occurrence
Found in oxidized copper deposits. Beautiful green bands make it popular for decoration.