Metal (Elemental Mineral)

Botryoidal Hematite (Kidney Ore)

Iron(III) oxide (Fe2O3)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Hematite

Hematite (Fe2O3)

Hematite

Iron(III) oxide (Fe2O3)

Hematite

Hematite (Fe2O3)

Bixbyite on Rhyolite

Bixbyite (Mn2+,Fe3+)2O3

Gold Nugget

Native Gold (Au)

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)

Gold Nugget

Native Gold (Au)

Pyrite

Iron Sulfide (FeS2)

Native Gold in Quartz

Native Gold (Au)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Native Gold (in Jewelry form)

Gold (Au)

Gold Ore / Native Gold

Native Gold (Au)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Magnetite (likely in Hematite or Ironstone)

Magnetite (Fe3O4)

Pyrite

Iron Sulfide (FeS2)

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Pyrite in Shale

Iron Disulfide (FeS2) in Sedimentary Shale

Magnetite / Iron Ore

Magnetite (Fe3O4)

Muscovite Mica (with Quartz)

Muscovite (KAl2(AlSi3O10)(OH)2)

Specular Hematite Geode/Nodule

Specularite (Polycrystalline Hematite), Fe2O3

Black Tourmaline

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

Gold Nugget

Native Gold (Au)

Gold Flake / Placer Gold

Native Gold (Au)

Pyrite

Iron Sulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Pyrite in Matrix (likely Quartz or Coal)

Iron Sulfide (FeS2)

Gold Nugget

Native Gold (Au)

Pyrite

Iron Sulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Hematite

Iron(III) oxide (Fe2O3)

Hematite

Iron(III) oxide (Fe2O3)

Moissanite

Silicon Carbide (SiC)

Pyrite

Iron Disulfide (FeS2)

Limonite (Iron Stone/Goethite)

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

Hematite

Iron(III) oxide (Fe2O3)

Galena

Lead(II) sulfide (PbS)

Gold Nugget

Native Gold (Au)

Hematite

Iron(III) oxide (Fe2O3)