Copper
Native Copper (Cu)
Category
Browse anthropic metallic specimen specimens identified by the Rock Identifier community.
Copper
Native Copper (Cu)
Sandstone with Ironstone Concretion
Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
Galena
Lead Sulfide (PbS)
Blue Aventurine
Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Basalt
Basalt
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Anthracite Coal
Anthracite
Basalt
Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)
Basalt
Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)
Basalt
Basalt (Mafic volcanic rock)
Pyrite
Iron Disulfide (FeS2)
Schist
Mica Schist
Fluorite
Calcium Fluoride (CaF2)
Slate
Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Basalt
Mafic Igneous Basalt
Basalt
Basalt
Basalt
Basalt
Schist
Mica Schist
Gold-Bearing Quartz
Silicon Dioxide with Native Gold (SiO2 + Au)
Sandstone Moqui Marble (Concretion)
Iron oxide concretion (Hematite/Goethite and Quartz)
Basalt
Basalt (Aphanitic mafic volcanic rock)
Chondrite Meteorite
Ordinary Chondrite (S-type asteroid origin)
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
Green Schist
Greenschist (Chlorite Schist)
Mica Schist
Mica Schist (primarily Muscovite or Biotite Schist)
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Pyrite
Iron Sulfide (FeS2)
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
Limonite with Quartz (Gossan)
Hydrated iron(III) oxide-hydroxide mixture (FeO(OH)·nH2O) with Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions, SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Aventurine Quartz
Silicon dioxide with inclusions (KAl2(AlSi3O10)(OH,F)2)
Pyrite Sun (Pyrite Dollar)
Iron Disulfide (FeS2)
Limonitic Gossan
Goethite/Limonite aggregate after sulfide
Basalt with Porphyritic Texture
Porphyritic Basalt
Vesicular Basalt
Basalt (Extrusive Igneous Rock)
Basalt with Quartz Veins
Mafic Igneous Rock (primarily Plagioclase and Pyroxene) with SiO2 inclusions
Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
Quartzite
Quartzite (primarily SiO2)