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Native copper

Native copper is an uncombined form of copper that occurs as a natural mineral. Copper is one of the few metallic elements to occur in native form, although it most commonly occurs in oxidized states and mixed with other elements. Native copper was an important ore used by pre-historic peoples.

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Category
Native metal
Cleavage
None
Color
Pale rose on fresh surface, quickly darkens to copper-red; in reflected light, pale rose
Crystal class
Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Crystal habit
As cubes, dodecahedra, and as tetrahexahedra; rarely as octahedra and complex combinations. Commonly flattened on {111}, elongated along . Also as irregular distortions, in twis…
Crystal system
Cubic

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Gallery

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Native copper

Nodes40
Edges39
Triples42
Avg. degree1.95
Density0.05
Components1

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Native copper

Top relations

related to Gallery · 20
Native copper → Arizona, Australia, Broken Hill, Dendritic, Halfbreed, Itauz Mine, Kazakhstan, Keweenaw County, Keweenaw Peninsula, Michigan, Mission Mine, Namibia, Native, New South Wales, Pima County, Ray Mine, Specimens, Tsumeb, US, USA
Category · 1
Native copper → Native metal
Cleavage · 1
Native copper → None
Color · 1
Native copper → Pale rose on fresh surface, quickly darkens to copper-red; in reflected light, pale rose
Crystal class · 1
Native copper → Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Crystal habit · 1
Native copper → As cubes, dodecahedra, and as tetrahexahedra; rarely as octahedra and complex combinations. Commonly flattened on {111}, elongated along . Also as irregular distortions, in twis…
Crystal system · 1
Native copper → Cubic
Dana classification · 1
Native copper → 1.1.1.3
Diaphaneity · 1
Native copper → Opaque
Formula · 1
Native copper → Cu

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Important terminology

copper native keweenaw occurs peoples mineral also form michigan metallic state peninsula natural one typically mines major many commercial lake

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Native copperCategoryNative metal1.00infobox
Native copperCleavageNone1.00infobox
Native copperColorPale rose on fresh surface, quickly darkens to copper-red; in reflected light, pale rose1.00infobox
Native copperCrystal classHexoctahedral (m3m) H-M symbol: (4/m 3 2/m)1.00infobox
Native copperCrystal habitAs cubes, dodecahedra, and as tetrahexahedra; rarely as octahedra and complex combinations. Commonly flattened on {111}, elongated along . Also as irregular distortions, in twis…1.00infobox
Native copperCrystal systemCubic1.00infobox
Native copperDana classification1.1.1.31.00infobox
Native copperDiaphaneityOpaque1.00infobox
Native copperFormulaCu1.00infobox
Native copperFractureHackly - jagged1.00infobox
Native copperLusterMetallic1.00infobox
Native copperMohs scale hardness2.5–31.00infobox
Native copperOther characteristicsTarnishes to black or green in air.1.00infobox
Native copperSolubilitySoluble in nitric acid1.00infobox
Native copperSpace groupFm3m1.00infobox
Native copperSpecific gravity8.951.00infobox
Native copperStreakCopper-red1.00infobox
Native copperStrunz classification01.AA.051.00infobox
Native copperTenacityHighly malleable and ductile1.00infobox
Native copperTwinningOn {111} to produce simple contact and penetration twins and cyclic groups1.00infobox
Native copperUnit cella = 3.615 Å; Z = 41.00infobox
Native copperis auncombined form of copper that occurs as a natural mineral0.90text

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