Mineral (Refined Metal)

Limonite after Pyrite (Pseudomorph)

FeO(OH)·nH2O following FeS2

Gold Nugget

Native Gold (Au)

Gold

Native Gold (Au)

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)

Gold

Native Gold (Au)

Turquoise and Hematite

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)

Gold

Native Gold (Au)

Pyrite in Matrix (likely Quartz or Schist matrix)

Iron Sulfide (FeS2)

Galena

Lead(II) sulfide (PbS)

Gold Nugget

Native Gold (Au)

Specular Hematite

Specularite (Iron Oxide, Fe2O3)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Gold

Native Gold (Au)

Gold

Native Gold (Au)

Black Sand (Magnetite Sand)

Magnetite (Fe3O4)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Gold

Native Gold (Au)

Hematite

Iron(III) oxide (Fe2O3)

Pyrite

Iron Sulfide (FeS2)

Gold Nugget

Native Gold (Au)

Gold flakes

Native Gold (Au)

Amethyst and Hematite Bracelet

Amethyst (SiO2) and Hematite (Fe2O3)

Graphite

Graphite (Native Carbon, C)

Gold Nugget

Native Gold (Au)

Magnetite Orthorthotropic Rock

Magnetite (Fe3O4)

Placer Gold Nugget

Native Gold (Au)

Hematite

Iron(III) oxide (Fe2O3)

Hematite (Iron Ore)

Hematite (Fe2O3)

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Pyrite

Iron Pyrite (FeS2)

Sunstone

Oligoclase (Plagioclase Feldspar) - (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions