monoclinic
Malachite
Cu2(CO3)(OH)2
Quick Facts
Hardness
3.5
Specific Gravity
3.6
Refractive Index
1.655
Crystal Structure
monoclinic[2/m]:{110}@1.0 + {010}@0.7 + {100}@0.5 + {011}@0.4 monoclinic
2/m
{110} {010} {100} {011}
Physical Properties
Crystal Systemmonoclinic
Hardness (Mohs)3.5
Specific Gravity3.6
CleavagePerfect {201}, fair {010}
FractureSubconchoidal to uneven
LustreVitreous (crystals), silky to dull (massive)
Optical Properties
Refractive Index1.655
Birefringence0.245
PleochroismWeak (light green to dark green)
Interactive Preview
Open this crystal in the CDL Playground to rotate, export, and explore in 3D.
Open in Playground monoclinic[2/m]:{110}@1.0 + {010}@0.7 + {100}@0.5 + {011}@0.4 Related Minerals
Other minerals in the monoclinic system
