Anthropic Metallic Specimen

Sunstone

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

Schist

Mica Schist (primarily Muscovite and Quartz)

Sandy Ironstone

Ferruginous Sandstone

Banded Iron Formation (BIF) / Iron Ore

Hematite-Magnetite BIF (Fe2O3 / Fe3O4 mixed with SiO2)

Goldstone

Avventurina (Cu + SiO2 glass)

Copper-bearing Mica Schist

Mica Schist with Native Copper inclusions

Slag (Industrial Glass/Metal)

Ferrous slag or Glassy silicate byproduct

Mica Schist with Pyrite

Muscovite/Biotite Schist with Iron Sulfide (FeS2)

Zinc Ore (Sphalerite in Matrix)

Sphalerite (Zn,Fe)S within a carbonate or silicate host rock

Red Hematite (Iron Ore)

Hematite (Fe2O3)

Tiger Iron

Tiger Iron (A complex combination of Hematite Fe2O3, Red Jasper SiO2, and Tiger's Eye SiO2/FeOOH)

Native Copper in Basalt

Cuprum (with Host Basalt)

Magnetite (likely with weathered Limonite/Hematite)

Magnetite (Fe3O4) with iron oxide weathering

Iron Meteorite (Individual)

Siderite (composed of Kamacite and Taenite minerals)

Lapis Lazuli

Lapis Lazuli (Complex silicate mixture)

Iron Meteorite

Siderite (Fe-Ni alloy, primarily Kamacite and Taenite)

Iron Meteorite

Siderite (comprised primarily of Kamacite and Taenite alloys)

Anthracite Coal

Anthracite (Carbon Content: 86%–98%)

Pyrite in Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Moqui Marble

Iron Oxide Concretion

Sunstone

Oligoclase (Feldspar variety), (Na,Ca)(Si,Al)4O8

Schist (specifically Mica Schist)

Mica Schist

Ironstone with Pyrite

Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)

Blue Celestite (with Galena)

Strontium sulfate (SrSO4) and Lead sulfide (PbS)

Pyrite on Quartz matrix

Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)

Pallasite Meteorite (Sliced and Polished)

Pallasite (Iron-Nickel Matrix with Olivine crystals)

Gold-bearing Quartz with Pyrite

Quartz (SiO2) with Gold (Au) and Pyrite (FeS2)

Aura Quartz

Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)

Shale with Pyrite

Clastic sedimentary rock containing Iron Disulfide (FeS2)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Mica Schist

Crystalline Schist (often containing Muscovite, Biotite, and Quartz)

Mica Schist

Mica Schist (primarily Muscovite and Biotite phyllosilicates)

Lapis Lazuli

Complex metamorphic rock primarily composed of Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite

Banded Iron Formation (Red Jasper and Hematite Chert)

Banded Iron Formation (BIF); Fe2O3 (Hematite) + SiO2 (Quartz/Jasper)

Fluorite (Rainbow Fluorite Point)

Calcium Fluoride (CaF2)

Rutilated Quartz (beads)

SiO2 with TiO2 inclusions (Titanium Dioxide inclusions within Quartz)

Banded Iron Formation (BIF) / Tiger Iron variety

Banded Iron Formation (composed primarily of Magnetite Fe3O4, Hematite Fe2O3, and Chert/Quartz SiO2)

Hematite with Magnetite

Iron Oxide (Fe2O3)

Schist

Mica Schist (variety: Muscovite/Biotite Schist)

Specular Hematite with Pyrite

Iron Oxide (Fe2O3) with Iron Sulfide (FeS2)

Iron Meteorite Fragment

Siderite (Geological term for iron meteorite class - Fe/Ni alloy)

Limonite (Iron Ore/Hydrated Iron Oxide)

Limonite (mixture of FeO(OH)·nH₂O minerals, mainly Goethite, FeO(OH) and Lepidocrocite, FeO(OH))