Anthropic Metallic Specimen

Fluorite (Green Fluorite)

Fluorite (Calcium Fluoride, CaF2)

Pyrite

Iron Disulfide (FeS2)

Fluorite

Calcium Fluoride (CaF2)

Fossil / Permineralized Bone

Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Fluorite

Calcium Fluoride (CaF2)

Native Gold (in earring form)

Gold (Au)

Botryoidal Hematite

Iron Oxide (Fe2O3)

Pyrite

Iron Disulfide (FeS2)

Anthracite Coal

Anthracite

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Gold Ore / Native Gold

Native Gold (Au)

Mica Schist with Iron Staining

Muscovite/Biotite Schist

Magnetite

Magnetite (Fe3O4)

Mica Schist (Garnetiferous)

Garnet-Mica Schist

Pyrite

Iron Sulfide (FeS2)

Chalcopyrite

Chalcopyrite (CuFeS2)

Pyrite

Iron Sulfide (FeS2)

Botryoidal Hematite (included in Quartz/Limonite matrix)

Fe2O3 (Hematite) on Quartz (SiO2) / Limonite

Pyrite

Iron Disulfide (FeS2)

Native Copper (Penny specimen)

Native Copper (Cu)

Gold Nugget

Native Gold (Au)

Basalt (River or Beach Pebble)

Basalt (Mafic Extrusive Igneous Rock)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Bismuth

Bismuth (Bi)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Pyrite with Iron Oxides (Fool's Gold in Matrix)

Iron Sulfide (FeS2)

Basalt River Stone

Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)

Gold

Native Gold (Au)

Basalt River Stone (Tumbled)

Basalt (Mafic Extrusive Igneous Rock)

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

Basalt (River Cobble)

Mafic Igneous Basalt (composed primarily of Plagioclase feldspar, Pyroxene, and Olivine)

Pyrite

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Botryoidal Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Basalt

Basalt (Extrusive Mafic Igneous Rock)

Pyrite

Iron Sulfide (FeS2)