Rock Identifier

Category

Mineral (Iron Ore)

Browse mineral (iron ore) specimens identified by the Rock Identifier community.

Learn about Mineral (Iron Ore) in the encyclopedia

Peacock Ore

Bog Iron

Banded Iron Formation

Banded Iron Formation

Ilmenite

Goethite

Chromite

Magnetite

Siderite

Limonite

Bornite

Hematite

Sperrylite

Copper Ore (Malachite and Limonite bearing rock) (Copper-bearing rock with secondary copper minerals) — mineral

Copper Ore (Malachite and Limonite bearing rock)

Copper-bearing rock with secondary copper minerals

Magnetite Nodule (Magnetite (Fe3O4)) — mineral

Magnetite Nodule

Magnetite (Fe3O4)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Iron-rich weathered rock (likely limonite/goethite concretion) (Limonite–goethite mixture; chiefly FeO(OH)·nH₂O) — mineral

Iron-rich weathered rock (likely limonite/goethite concretion)

Limonite–goethite mixture; chiefly FeO(OH)·nH₂O

Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

Limonite (with Goethite/Ironstone) (FeO(OH)·nH2O (Hydrated Iron Oxide)) — mineral

Limonite (with Goethite/Ironstone)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Magnetite (Octahedral Crystal) (Magnetite (Fe3O4)) — mineral

Magnetite (Octahedral Crystal)

Magnetite (Fe3O4)

Weathered iron-rich rock fragment (Likely limonite/goethite-rich ironstone; exact identification requires testing) — mineral

Weathered iron-rich rock fragment

Likely limonite/goethite-rich ironstone; exact identification requires testing

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Hematite (Oolitic or Earthy variety) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (Oolitic or Earthy variety)

Iron(III) oxide (Fe2O3)

Magnetite (Loadstone candidate) (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite (Loadstone candidate)

Iron(II,III) oxide (Fe3O4)

Magnetite (Small Granule) (Magnetite (Fe3O4)) — mineral

Magnetite (Small Granule)

Magnetite (Fe3O4)

Specular Hematite (Hematite (Iron Oxide, Fe2O3)) — mineral

Specular Hematite

Hematite (Iron Oxide, Fe2O3)

Limonite Stained Basalt (Hydrated Iron Oxide on Mafic Volcanic Rock (FeO(OH)·nH2O)) — igneous

Limonite Stained Basalt

Hydrated Iron Oxide on Mafic Volcanic Rock (FeO(OH)·nH2O)

Metallic sulfide ore fragment, possibly pyrite-bearing rock (Indeterminate; likely pyrite (FeS₂) in a sulfide-rich matrix) — mineral

Metallic sulfide ore fragment, possibly pyrite-bearing rock

Indeterminate; likely pyrite (FeS₂) in a sulfide-rich matrix

Quartz Vein in Metamorphic Rock (Quartz-veined Schist or Gneiss) — metamorphic

Quartz Vein in Metamorphic Rock

Quartz-veined Schist or Gneiss

Hematite (Botryoidal/Kidney Ore) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (Botryoidal/Kidney Ore)

Iron(III) oxide (Fe2O3)

Hematite Concretion (Iron(III) oxide (Fe2O3)) — mineral

Hematite Concretion

Iron(III) oxide (Fe2O3)

Ferruginous Sandstone (Gozzanous) (SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating) — sedimentary

Ferruginous Sandstone (Gozzanous)

SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Ironstone Concretion (Siderite or Hematite Concretion) — sedimentary

Ironstone Concretion

Siderite or Hematite Concretion

Banded Iron Formation (Banded Iron Formation (BIF)) — sedimentary

Banded Iron Formation

Banded Iron Formation (BIF)

Hematite (Iron Oxide (Fe2O3)) — mineral

Hematite

Iron Oxide (Fe2O3)

Limonite/goethite-rich ironstone (probable) (Limonite, chiefly hydrated iron oxides; commonly goethite, α-FeO(OH), with possible quartz or host-rock inclusions) — mineral

Limonite/goethite-rich ironstone (probable)

Limonite, chiefly hydrated iron oxides; commonly goethite, α-FeO(OH), with possible quartz or host-rock inclusions

Yellow Ocher / Limonite (FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)) — mineral

Yellow Ocher / Limonite

FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)

Limitation Concretion (Ironstone Concretion (Goethite/Limonite)) — sedimentary

Limitation Concretion

Ironstone Concretion (Goethite/Limonite)

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

Magnetite / Iron Ore

Magnetite (Fe3O4)

Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein (Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite) — metamorphic

Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein

Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite

Magnetite with Quartz (Magnetite (Fe3O4)) — mineral

Magnetite with Quartz

Magnetite (Fe3O4)

Botryoidal hematite/goethite specimen (Hematite (Fe₂O₃), likely mixed with goethite (FeO(OH))) — mineral

Botryoidal hematite/goethite specimen

Hematite (Fe₂O₃), likely mixed with goethite (FeO(OH))

Ferruginous Quartz (Iron-Stained Quartz) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Ferruginous Quartz (Iron-Stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Ferruginous Sandstone (Sandstone (enriched with Iron Oxide)) — sedimentary

Ferruginous Sandstone

Sandstone (enriched with Iron Oxide)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Magnetite (Magnetite (Iron(II,III) oxide, Fe3O4)) — mineral

Magnetite

Magnetite (Iron(II,III) oxide, Fe3O4)

Siderite Concretion (Ironstone (Siderite) Concretion, FeCO3) — sedimentary

Siderite Concretion

Ironstone (Siderite) Concretion, FeCO3

Specular Hematite (Specularite (Fe2O3)) — mineral

Specular Hematite

Specularite (Fe2O3)

Weathered iron-rich rock, likely laterite or ironstone (Ferruginous laterite/ironstone, composed mainly of goethite (FeO(OH)), hematite (Fe₂O₃), and clay minerals) — sedimentary

Weathered iron-rich rock, likely laterite or ironstone

Ferruginous laterite/ironstone, composed mainly of goethite (FeO(OH)), hematite (Fe₂O₃), and clay minerals

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)