Azurite vs Copper

Property Azurite Copper
Formula Cu3(CO3)2(OH)2 Cu
Crystal System Monoclinic Cubic (Isometric)
Mineral Class 05 Carbonates and Nitrates 01 Native Elements
Mohs Hardness 3.5-4.0 2.5-3.0
Color Azure blue, dark blue Copper-red, tarnishes to brown/green
Luster Vitreous Metallic
Streak Light blue Copper-red
Transparency Transparent Opaque
Cleavage Perfect {011}, fair {100} None
Fracture Conchoidal Hackly

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