Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Category
Browse anthropic metallic specimen specimens identified by the Rock Identifier community.
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Hematite
Iron(III) oxide (Fe2O3)
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
Specular Hematite (Specularite) in Matrix
Specularite (Fe2O3)
Ironstone Concretion (Limonite/Goethite)
Iron-rich sedimentary rock (FeOx)
Gold
Native Gold (Au)
Hematite (Ironstone) Nodule
Hematite (Fe2O3)
Bornite
Bornite (Cu5FeS4)
Banded Iron Formation
BIF (Banded Iron Formation)
Hematite
Hematite (Α-Fe2O3)
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite treated with acid
Specular Hematite
Hematite (Fe2O3)
Iron Ore (Hematite/Magnetite mixture)
Ferrous Oxide (Fe2O3 / Fe3O4)
Ring with an Orange Inlay
N/A (Man-made object)
Basalt with Magnetite inclusions
Basalt (Mafic silicate rock) potentially containing Magnetite (Fe3O4)
Hematite
Iron(III) oxide (Fe2O3)
Limonite-pseudomorph after Pyrite (Prophecy Stone)
Goethite and Limonite secondary minerals (FeO(OH)·nH2O) replacing Pyrite (FeS2)
Specular Hematite
Iron(III) oxide (Fe2O3)
Specular Hematite
Iron Oxide (Fe2O3)
Peacock Ore (Bornite or Chalcopyrite treated with acid)
Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Nobby Hematite (Iron Ore)
Hematite (Fe2O3)
Chalcopyrite in Quartz (Gold-bearing Ore)
CuFeS2 (Chalcopyrite)
Red Hematite
Iron(III) oxide (Fe2O3)
Hematite
Iron (III) oxide (Fe2O3)
Magnetite or Hematite-rich Ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)
Iron Slag
Anthropogenic Vitreous Silicate (Byproduct of Smelting)
Iron Meteorite
Siderite (Iron-Nickel Meteorite)
Iron (Hematite variety)
Iron (Fe) / Hematite (Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)
Bismuth
Bismuth (element Bi) with oxidized thin-film interference layer
Amethyst and Hematite Bracelet
Amethyst (SiO2) and Hematite (Fe2O3)
Specular Hematite with Quartz
Ferric oxide (Fe2O3) and Silicon dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Hematite / Goethite (Iron Ore)
Iron Oxide (Fe2O3 / FeO(OH))
Hematite
Iron(III) oxide (Fe2O3)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
Iron Meteorite
Siderite (Iron-Nickel Alloy)
Hematite
Iron(III) oxide (Fe2O3)