Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
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Hematite (Concretion)
Iron(III) oxide (Fe2O3)
mineral
Limonite (Ironstone Concretion)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Gold Ore in Quartz/Matrix
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite in Shale
Iron Disulfide (FeS2)
mineral
Carborundum
Silicon Carbide (SiC)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Hematite (Iron Ore)
Hematite (alpha-Fe2O3)
mineral
Iron Meteorite
Siderite (meteoritic iron, Fe-Ni alloy)
mineral
Green Sheen Obsidian
Volcanic Glass (SiO2 with microscopic inclusions)
igneous
Ironstone / Hematite
Iron(III) oxide (Fe2O3)
mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Sunstone
Plagioclase Feldspar (containing (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions)
mineral
Green Fluorite with Galena
Calcium Fluoride (CaF2) with Lead Sulfide (PbS)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (Green Fluorite)
Calcium Fluoride (CaF2)
mineral
Fuchsite (Green Muscovite / Mica Schist)
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Gold-bearing Quartz and Pyrite
Auriferous Quartz (SiO2 + Au) with Pyrite (FeS2)
mineral
Basalt with Iron Oxidation
Extrusive mafic volcanic rock
igneous
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Ironstone concretion
Siderite or Limonite concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary