Native Copper in Basalt
Cu
mineral
Category
Mineral (Native Element Alloy)
Browse mineral (native element alloy) specimens identified by the Rock Identifier community.
Learn about Mineral (Native Element Alloy) in the encyclopedia
View all →
Aquamarine
Beryl (Be3Al2Si6O18 with trace Fe2+)
mineral
Celestine (Celestite)
Strontium sulfate (SrSO4)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Diamond (Faceted)
Carbon (C)
gemstone
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
mineral-based human-made alloy
Pegmatitic granite fragment
Granitic pegmatite, chiefly quartz, feldspar, and mica
igneous
Sandstone
Arenite
sedimentary
River Rock (Granite Cobble)
Granite (Phaneritic Quartz-Feldspar-Mica intrusive rock)
igneous
Granite Cobble
Granite (Felsic Plutonic Rock)
igneous
Quartz-rich pegmatite (likely milky quartz with feldspar)
Pegmatitic quartz–feldspar rock; primarily SiO₂ quartz with K-feldspar/plagioclase
igneous
Sunstone
Plagioclase Feldspar (Na,Ca)(Si,Al)4O8
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Eudialyte in Matrix
Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Pegmatitic pink feldspar–quartz rock
Granitic pegmatite; chiefly microcline/orthoclase feldspar (KAlSi₃O₈), quartz (SiO₂), and minor mica
igneous
Graphite
Graphite (Native Carbon, C)
metamorphic
Quartz-bearing feldspathic pegmatite
Pegmatite, chiefly quartz (SiO₂) and potassium feldspar (KAlSi₃O₈), possibly with mica
igneous
Quartz geode (druzy quartz cavity)
Silica, SiO₂; microcrystalline-to-crystalline quartz lining a volcanic vesicle
mineral
Tumbled pink-orange feldspar
Microcline or orthoclase feldspar, KAlSi₃O₈ (tentative)
mineral
Rough Diamond
Diamond (Native Carbon), C
mineral
Rough Diamond
Diamond (Native Carbon, C)
mineral
Copper Bullion Round
Native Copper (refined), Cu
mineral
Graphite
Graphite (Native Carbon, C)
Mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Sunstone (Feldspar)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Polished fossil tooth or jaw fragment
Indeterminate vertebrate dental/bone fossil; likely mineralized enamel and dentine
fossil
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2)
mineral
Turquoise or Chrysocolla (Inlaid Jewelry)
Hydrated copper aluminum phosphate / Hydrated copper phyllosilicate
mineral
Sunstone
Oligoclase (Feldspar variety)
mineral
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
mineral
Indeterminate metallic mineral fragments
Possibly pyrite, chalcopyrite, or metallic sulfide-bearing rock
mineral
Diamond
Carbon (C)
gemstone
Diamond (Cut Gemstone)
Natural Carbon (C)
gemstone
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Beryl (Aquamarine variety)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Polished dendritic agate (likely moss or plume agate)
Microcrystalline quartz, SiO₂, with iron-oxide inclusions
mineral
Polished malachite
Malachite, Cu₂CO₃(OH)₂
mineral
Sandstone (Quartzite Pebble)
Arenite / Metamorphosed Sandstone (SiO2)
sedimentary