Rock Identifier

Category

Anthropic Metallic Specimen

Browse anthropic metallic specimen specimens identified by the Rock Identifier community.

Limonite Pseudomorph after Pyrite (Limonite (FeO(OH)·nH2O) replacing Pyrite (FeS2)) — mineral

Limonite Pseudomorph after Pyrite

Limonite (FeO(OH)·nH2O) replacing Pyrite (FeS2)

mineral
Lapis Lazuli (Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)

metamorphic
Basalt (Vesicular) (Extrusive mafic igneous rock; primarily (Mg, Fe)2SiO4 (Olivine), CaAl2Si2O8 (Plagioclase Feldspar), and Pyroxene) — igneous

Basalt (Vesicular)

Extrusive mafic igneous rock; primarily (Mg, Fe)2SiO4 (Olivine), CaAl2Si2O8 (Plagioclase Feldspar), and Pyroxene

igneous
Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous
Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

mineral
Pyrite (Iron Pyrite (FeS2)) — mineral

Pyrite

Iron Pyrite (FeS2)

mineral
Labradorite (Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8) — mineral

Labradorite

Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8

mineral
Anthracite Coal (Anthracite (Carbon-rich mineraloid)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich mineraloid)

metamorphic
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

mineral
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

mineral
Anthracite Coal (Anthracite (Carbon-based sedimentary-metamorphic rock)) — metamorphic

Anthracite Coal

Anthracite (Carbon-based sedimentary-metamorphic rock)

metamorphic
Basalt (Vesicular and Scoria) (Basalt (extrusive volcanic rock)) — igneous

Basalt (Vesicular and Scoria)

Basalt (extrusive volcanic rock)

igneous
Black Tourmaline (Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Basalt (with possible minor veining) (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt (with possible minor veining)

Basalt (Mafic Extrusive Igneous Rock)

igneous
Vesicular Basalt (Extrusive mafic igneous rock) — igneous

Vesicular Basalt

Extrusive mafic igneous rock

igneous
Diabase (Dolerite) (Mafic Intrusive Igneous Rock) — igneous

Diabase (Dolerite)

Mafic Intrusive Igneous Rock

igneous
Limonite (often after Pyrite) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (often after Pyrite)

Limonite (FeO(OH)·nH2O)

mineral
Anthracite Coal (Anthracite (Carbon C)) — metamorphic

Anthracite Coal

Anthracite (Carbon C)

metamorphic
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Basalt with Iron Oxidation (Lattice/Veined) (Mafic Volcanic Rock (principally Plagioclase and Pyroxene)) — igneous

Basalt with Iron Oxidation (Lattice/Veined)

Mafic Volcanic Rock (principally Plagioclase and Pyroxene)

igneous
Basalt (Basalt) — igneous

Basalt

Basalt

igneous
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Mica Schist (with Muscovite) (Muscovite/Quartz Schist (KAl2(AlSi3O10)(OH)2)) — metamorphic

Mica Schist (with Muscovite)

Muscovite/Quartz Schist (KAl2(AlSi3O10)(OH)2)

metamorphic
Black Tourmaline (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

mineral
Basalt (Mafic volcanic rock) — igneous

Basalt

Mafic volcanic rock

igneous
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Ironstone Concretion / Goethite-Hematite Nodule (Goethite/Hematite (α-FeO(OH) / Fe2O3)) — sedimentary

Ironstone Concretion / Goethite-Hematite Nodule

Goethite/Hematite (α-FeO(OH) / Fe2O3)

sedimentary
Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

mineral
Limonite (Ironstone) (Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))) — mineral

Limonite (Ironstone)

Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))

mineral
Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

igneous
Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous
Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

mineral
Graphite (Graphite (Native Carbon, C)) — Mineral

Graphite

Graphite (Native Carbon, C)

Mineral
Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous
Basalt (Mafic volcanic rock (dominated by Plagioclase and Pyroxene)) — igneous

Basalt

Mafic volcanic rock (dominated by Plagioclase and Pyroxene)

igneous
Ironstone Concretion (Siderite or Hematite-rich Concretion (FeCO3 / Fe2O3)) — sedimentary

Ironstone Concretion

Siderite or Hematite-rich Concretion (FeCO3 / Fe2O3)

sedimentary
Basalt (Basalt (Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Extrusive Igneous Rock)

igneous
Mica Schist (Mica Schist (primarily Muscovite or Biotite-rich sequence)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite-rich sequence)

metamorphic