Mineral (Processed Metal)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)

Sandy Ironstone

Ferruginous Sandstone

Schist

Mica Schist

Schist

Lepidoblastic Mica Schist

Basalt

Mafic Igneous Rock (composed primarily of plagioclase, pyroxene, and olivine)

Jasper with Hematite Inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Ironstone Concretion / Goethite Nodules

Ironstone (composed primarily of Goethite FeO(OH) and Limonite)

Bog Iron / Limonite Concretion

Goethite/Limonite mixture (FeO(OH)·nH2O)

Schist (Biotite Schist)

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

Schist

Mica Schist

Basalt River Stone

Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)

Nuummite

Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)

Ironstone Concretion (Limonite/Goethite)

Goethite-rich Concretion (FeO(OH))

Vesicular Basalt (Scoria)

Vesicular Basalt

Schist

Mica Schist

Muscovite Schist

Mica Schist (primarily KAl2(AlSi3O10)(OH)2)

Basalt with Granite Inclusions (Xenoliths)

Mafic igneous rock (Basalt) with Sialic minerals

Sandstone with Ironstone Concretion

Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))

Sandstone

Clastic Sedimentary Rock (composed mostly of quartz, SiO2)

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

Iron Sulfide (FeS2)

Basalt

Extrusive mafic igneous rock

Basalt (River Cobble)

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

Copper-bearing Mica Schist

Mica Schist with Native Copper inclusions

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Black Sand (Magnetite Sand)

Magnetite-rich Placers (Fe3O4)

Lapis Lazuli

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite and other associated minerals)

Sodalite in Matrix (often called Blue Marble or Sodalite-Syenite)

Sodalite-bearing Syenite / Na8Al6Si6O24Cl2 (Sodalite component)

Dendritic Agate (River Pebble)

Silicon Dioxide (SiO2) with Manganese or Iron oxide inclusions

Aventurine

Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Basalt

Basalt (Aphanitic mafic volcanic rock)

Banded Iron Formation (BIF)

Banded Iron Formation (Fe2O3 + SiO2)

Schist

Mica Schist

Chalcopyrite

Chalcopyrite (CuFeS2)

Quartz (Milky or Rough Variety)

Silicon Dioxide (SiO2)

Moqui Marble

Iron Oxide Concretion

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Blue Aventurine

Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions

Chalcopyrite

Chalcopyrite (CuFeS2)

Peacock Ore (Bornite or Iridescent Chalcopyrite)

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation

Rhodochrosite with Pyrite and Quartz

Manganese Carbonate (MnCO3)

Magnetite (likely with weathered Limonite/Hematite)

Magnetite (Fe3O4) with iron oxide weathering

Astrophyllite

Astrophyllite (K2NaFe7Ti2Si8O26(OH)4F)