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cubicuncommonNative Elements
Copper
Cu
This specimen displays native copper, a metallic, reddish-brown mineral, often found in dendritic or massive forms, sometimes with a green or black tarnish due to oxidation.
Copper Physical Properties
Mohs Hardness
2.5Crystal System
cubicLuster
metallicStreak Color
copper-redCleavage
noneFracture
hacklySpecific Gravity
8.94Colors
copper-red, brown, green (tarnish)Transparency
opaqueType Locality
Michigan (USA), Arizona (USA), Bolivia, ChileMineral Group
Native ElementsUses
electrical conductor, alloys, coinage, jewelry, industrialAssociated Minerals
cuprite, malachite, azurite, chalcocite, bornite, epidote, calcite, quartzRarity
uncommonGeological Context
Native copper forms in hydrothermal veins, basaltic lavas, and sedimentary rocks, often as a primary mineral or as a secondary mineral in the oxidation zones of copper sulfide deposits.
