Anthracite Coal
Anthracite (Carbon-rich mineraloid)
metamorphic
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
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Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyritic Gneiss
Metamorphic Gneiss with Pyrite inclusions
metamorphic
Basalt
Basalt (principally Plagioclase Feldspar and Pyroxene)
igneous
Bull Quartz with Mica and Host Rock
Massive Quartz (SiO2) with Muscovite/Chlorite inclusions
igneous
Black Tourmaline (Schorl)
Sodium Iron Aluminum Borate Silicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral/gemstone
Chondrite Meteorite
Ordinary Chondrite (L or H type)
igneous
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2)
mineral
Chalcopyrite
CuFeS2
mineral
Ironstone Concretion (Limonite/Goethite)
Iron-rich sedimentary rock (FeOx)
sedimentary
Muscovite Schist
Muscovite Schist (KAl2(AlSi3O10)(OH)2 matrix)
metamorphic
Bornite
Bornite (Cu5FeS4)
mineral
Barite
Barium Sulfate (BaSO4)
mineral
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
mineral
Rainbow Fluorite
Calcium Fluoride (CaF2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Hematite
Hematite (Fe2O3)
mineral
Specular Hematite (Specularite)
Hematite (Fe2O3)
mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Moqui Marble
Hematite-Goethite Concretion (Fe2O3 / FeO(OH))
mineral
Black Tourmaline (Schorl)
Schorl (Complex sodium iron aluminum borosilicate)
mineral
Hematite
Hematite (Fe2O3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8 (Calcium Sodium Aluminum Silicate)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz with Metallic Inclusion
Silicon Dioxide (SiO2) with associated metallic sulfide or oxide
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Hematite Nodular Iron Ore
Hematite (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Black Tourmaline (Schorl)
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe2+3Al6Si6O18(BO3)3(OH)3OH
mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
mineral
Marcasite Concretion (Propeller/Sand Dollar shape)
Marcasite (FeS2)
mineral
Barite Rose on Marcasite
Barium Sulfate (BaSO4) on Iron Sulfide (FeS2)
mineral