Mineral (Refined Metal)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Black Tourmaline

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

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Gold Nugget

Native Gold (Au)

Pyrite

Iron Sulfide (FeS2)

Hematite Nodular Concretion

Iron(III) oxide (Fe2O3)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Gold Nugget

Native Gold (Au)

Specular Hematite

Specularite (Iron Oxide, Fe2O3)

Gold Nugget

Native Gold (Au)

Limonite after Pyrite (Pseudomorph)

FeO(OH)·nH2O following FeS2

Gold Nugget

Native Gold (Au)

Hematite

Iron(III) oxide (Fe2O3)

Gold Nugget

Native Gold (Au)

Rough Blue Diamond

Carbon (C) - Type IIb Diamond

Hematite

Iron(III) oxide (Fe2O3)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Gold

Native Gold (Au)

Amethyst and Hematite Bracelet

Amethyst (SiO2) and Hematite (Fe2O3)

Hematite

Iron(III) oxide (Fe2O3)

Gold Nugget

Native Gold (Au)

Gold flakes

Native Gold (Au)

Gold

Native Gold (Au)

Gold

Native Gold (Au)

Black Sand (Magnetite Sand)

Magnetite (Fe3O4)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Pyrite

Iron Sulfide (FeS2)

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Hematite (Iron Ore)

Hematite (Fe2O3)

Placer Gold Nugget

Native Gold (Au)

Hematite

Iron(III) oxide (Fe2O3)

Gold Ore (in Quartz/Gossan matrix)

Native Gold (Au) in Limonite/Quartz matrix

Pyrite

Iron Sulfide (FeS2)

Gold Nugget

Native Gold (Au)

Graphite

Graphite (Native Carbon, C)

Magnetite Orthorthotropic Rock

Magnetite (Fe3O4)