CuCubic
Copper
Cu
Native ElementsChemical FormulaCu
Crystal SystemCubic
Mohs Hardness3
Specific Gravity8.96
ColorCopper red to brown
LusterMetallic
StreakCopper red metallic
CleavageNone
FractureHackly
Occurrence
Found in basaltic rocks and hydrothermal veins. One of few metals found in native form.