Mineral (Refined Metal)

Gold Nugget

Gold (Au)

Gold Nugget

Gold (Au)

Hematite

Iron Oxide (Fe2O3)

Shungite (or Black Onyx / Obsidian)

Amorphous Carbon (Shungite) / SiO2 (Onyx/Obsidian)

Hematite

Iron(III) oxide (Fe2O3)

Native Gold Nugget

Gold (Au)

Pyrite

Iron Sulfide (FeS2)

Black Tourmaline (Schorl)

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

Pyrite

Iron Sulfide (FeS2)

Magnetite (Loadstone candidate)

Iron(II,III) oxide (Fe3O4)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold) in Matrix

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Titanium Aura Quartz

Silicon Dioxide (SiO2) coated with Titanium and Niobium

Pyrite

Iron Sulfide (FeS2)

Magnetite

Magnetite (Fe3O4)

Native Gold Nugget

Native Gold (Au)

Shungite

Shungite (Non-crystalline carbon, C)

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Hematite (Botryoidal/Kidney Ore)

Iron(III) oxide (Fe2O3)

Hematite Concretion

Iron(III) oxide (Fe2O3)

Black Tourmaline

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

Gold Flake (Placer Gold)

Native Gold (Au)

Pyrite in Matrix (Commonly called Fool's Gold)

Iron Sulfide (FeS2)

Galena

Lead(II) sulfide (PbS)

Sunstone

Oligoclase or Andesine (Feldspar Group), (Ca,Na)((Al,Si)4O8)

Magnetite

Magnetite (Fe3O4)

Pyrite

Iron Disulfide (FeS2)

Nobby Hematite (Iron Ore)

Hematite (Fe2O3)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Hematite

Iron(III) oxide (Fe2O3)

Chalcopyrite ore

Chalcopyrite (CuFeS2)

Magnetite

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

Mica

Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)

Hematite

Iron(III) oxide (Fe2O3)

Gold Nugget / Gold Flakes

Native Gold (Au)

Specular Hematite and Magnetite Ore

Iron Oxide (Fe2O3 and Fe3O4)

Pyrite

Iron Disulfide (FeS2)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Magnetite / Ironstone

Iron(II,III) oxide (Fe3O4)

Magnetite

Magnetite (Fe3O4)