Mineral (Refined Metal)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Chalcopyrite

Chalcopyrite (CuFeS2)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Gold Nugget

Native Gold (Au)

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Quartz with Mica inclusions (Gold-colored Mica)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (Phlogopite/Muscovite) inclusions

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Iron Meteorite

Siderite (Iron-Nickel Alloy), predominantly Kamacite and Taenite (Fe, Ni)

Aventurine (Green Quartz)

Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)

Muscovite Mica

Muscovite: KAl2(AlSi3O10)(OH)2

Peacock Ore

Bornite (Cu5FeS4)

Black Tourmaline

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

Gold Nugget

Gold (Au)

Hematite (Polished / Tumbled)

Iron Oxide (Fe2O3)

Pyrite

Iron Sulfide (FeS2)

Celestite (Celestine)

Strontium Sulfate (SrSO4)

Metallic sulfide-bearing rock, possibly galena-rich ore

Likely galena (PbS) with iron sulfides and quartz/rock matrix; exact identification requires testing

Weathered metallic sulfide-bearing rock, possibly chalcopyrite ore

Likely chalcopyrite (CuFeS₂) in a weathered host rock; identification is uncertain from the photograph

Amethyst geode fragment

Quartz, SiO₂; purple color from irradiation-related iron impurities

Tumbled chalcopyrite (likely)

Chalcopyrite, CuFeS₂

Weathered metallic-looking rock, possibly hematite-bearing ironstone

Hematite-rich ironstone; hematite Fe₂O₃, potentially with magnetite Fe₃O₄ and quartz

Metallic sulfide mineral specimen, likely pyrite

Pyrite (FeS₂), possibly a pyrite-rich sulfide aggregate

Hematite

Hematite (Fe2O3)

Green Aventurine

Quartz with fuchsite inclusions (SiO2)

Green Aventurine

Quartz (SiO2) with fuchsite inclusions

Pyrite-bearing Rock / Pyrite Ore

Iron Sulfide (FeS2) in host rock matrix

Green Aventurine

Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions

Quartz with Mica

Silicon Dioxide (SiO2) with Mica group inclusions

Quartz Pebble with Mineral Inclusions

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Limonite (Yellow Ochre)

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

Sodalite

Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)

Limonite pseudomorph after Pyrite

Goethite/Limonite FeO(OH)·nH2O

Green Aventurine

SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)

Pyrite

Iron Sulfide (FeS2)

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Sunstone with Black Tourmaline (Arfvedsonite)

Feldspar (Na,Ca)(Al,Si)4O8 with Schorl Na(Fe3+)3Al6(Si6O18)(BO3)3(OH)3(OH)

Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Galena

Lead Sulfide (PbS)