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

Quartz in Limonite-rich Matrix (Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O) — Mineral in Sedimentary/Secondary host

Quartz in Limonite-rich Matrix

Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O

Mineral in Sedimentary/Secondary host

Limonite Nugget (Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)) — mineral

Limonite Nugget

Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)

Limonite Geode / Ironstone Nodule (Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite Geode / Ironstone Nodule

Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)

Limonite or Ironstone (Hydrated iron oxide-hydroxide, approximately FeO(OH)·n(H2O)) — mineral

Limonite or Ironstone

Hydrated iron oxide-hydroxide, approximately FeO(OH)·n(H2O)

Limonite (FeO(OH)•nH2O) — mineral

Limonite

FeO(OH)•nH2O

Limonite/Goethite Gossan (FeO(OH)·nH2O (Hydrated iron oxide)) — mineral

Limonite/Goethite Gossan

FeO(OH)·nH2O (Hydrated iron oxide)

Limonite Geode / Ironstone Concretion with Quartz (Limonite with Quartz (FeO(OH)·nH2O + SiO2)) — sedimentary

Limonite Geode / Ironstone Concretion with Quartz

Limonite with Quartz (FeO(OH)·nH2O + SiO2)

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

Limonite

Limonite (FeO(OH)·nH2O)

Limonite Ironstone (Goethite-Limonite concretion / Iron oxide) — sedimentary

Limonite Ironstone

Goethite-Limonite concretion / Iron oxide

Goethite pseudomorph after Pyrite (Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)) — mineral

Goethite pseudomorph after Pyrite

Goethite (FeO(OH)) pseudomorph after Pyrite (FeS2)

Limonite (Ironstone) (Goethite/Limonite (Hydrated iron(III) oxide-hydroxide)) — mineral

Limonite (Ironstone)

Goethite/Limonite (Hydrated iron(III) oxide-hydroxide)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Limonite (Ironstone) (FeO(OH)·nH2O) — sedimentary

Limonite (Ironstone)

FeO(OH)·nH2O

Limonite (Pseudomorph after Pyrite/Marcasite) (Hydrated Iron Oxide (FeO(OH)·nH2O)) — mineral

Limonite (Pseudomorph after Pyrite/Marcasite)

Hydrated Iron Oxide (FeO(OH)·nH2O)

Limonite (Iron Ore) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Limonite and Goethite on Gossan (FeO(OH)·nH2O) — mineral

Limonite and Goethite on Gossan

FeO(OH)·nH2O

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Goethite (Goethite (FeO(OH))) — mineral

Goethite

Goethite (FeO(OH))

Goethite / Limonite Gossan (Hydrated Iron Oxide (FeO(OH))) — sedimentary

Goethite / Limonite Gossan

Hydrated Iron Oxide (FeO(OH))

Limonite pseudomorph after pyrite (Goethite / Limonite pseudomorph after Pyrite (Fe3+O(OH) replacing FeS2)) — mineral

Limonite pseudomorph after pyrite

Goethite / Limonite pseudomorph after Pyrite (Fe3+O(OH) replacing FeS2)

Limonite (Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)) — mineral

Limonite

Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)

Botryoidal goethite/limonite specimen (Goethite (α-FeO(OH)), commonly mixed with limonite and iron oxides) — mineral

Botryoidal goethite/limonite specimen

Goethite (α-FeO(OH)), commonly mixed with limonite and iron oxides

Limonite (Ironstone) (FeO(OH)qn H2O) — sedimentary

Limonite (Ironstone)

FeO(OH)qn H2O

Hematite-rich ironstone (Hematite (α-Fe₂O₃), likely in a limonitic or ironstone matrix) — mineral

Hematite-rich ironstone

Hematite (α-Fe₂O₃), likely in a limonitic or ironstone matrix

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Polished dark gemstone, likely hematite or magnetite (Hematite (Fe₂O₃) or magnetite (Fe₃O₄); exact identification requires testing) — mineral

Polished dark gemstone, likely hematite or magnetite

Hematite (Fe₂O₃) or magnetite (Fe₃O₄); exact identification requires testing

Limonite Boxwork / Iron Ore Concretion (FeO(OH)qnH2O (Hydrated iron oxide)) — sedimentary

Limonite Boxwork / Iron Ore Concretion

FeO(OH)qnH2O (Hydrated iron oxide)

Botryoidal hematite (speculative) (Hematite, iron(III) oxide (Fe₂O₃), possibly mixed with goethite or magnetite) — mineral

Botryoidal hematite (speculative)

Hematite, iron(III) oxide (Fe₂O₃), possibly mixed with goethite or magnetite

Limonite or Ironstone Concretion (FeO(OH)·nH₂O (Hydrated iron oxide-hydroxide)) — mineral

Limonite or Ironstone Concretion

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

Limonite (also known as Yellow Ochre or Brown Hematite) (Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)) — Mineral

Limonite (also known as Yellow Ochre or Brown Hematite)

Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)

Limonite Bog Iron (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O) — sedimentary

Limonite Bog Iron

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

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Iron Ore / Hematite / Ironstone Nodule (Hematite / Goethite (Fe2O3 / FeO(OH))) — sedimentary

Iron Ore / Hematite / Ironstone Nodule

Hematite / Goethite (Fe2O3 / FeO(OH))

Limonite (Iron Ore) (Limonite (Iron oxide-hydroxide mixture, FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (Iron oxide-hydroxide mixture, FeO(OH)·nH2O)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Likely iron-rich concretion or weathered ironstone (Ironstone concretion, composed mainly of iron oxides/hydroxides (goethite and/or limonite) cementing sediment) — sedimentary

Likely iron-rich concretion or weathered ironstone

Ironstone concretion, composed mainly of iron oxides/hydroxides (goethite and/or limonite) cementing sediment