Mineral, Often Found In Sedimentary Deposits

Pyrite

Iron Disulfide (FeS2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Pyrite (on Quartz matrix)

Iron Sulfide (FeS2)

Native Gold

Native Gold (Au)

Chalcedony (Moonstone variant or White Agate)

Silicon Dioxide (SiO₂)

Quartz (Milky/Chalcedony variety)

Silicon Dioxide (SiO2)

Fancy Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Yellow Quartz (Citrine or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Quartz Druzy Geode

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Limonite (Gozzany Iron)

Limonite (FeO(OH)·nH2O)

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Snakeskin Agate

Agate (Cryptocrystalline Quartz, SiO2)

Jasper

Silicon Dioxide (SiO2) with impurities

Petrified Wood

Silicon Dioxide (SiO2) - Calcified / Silicified Wood

Sandstone Pebble

Arenite (primarily Quartz, SiO2)

Aragonite Star Cluster

Aragonite (Sputnik habit) - CaesarCO3

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Chert (Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Fossil Shark Tooth

Carcharodon sp. (likely Otodus or similar Lamniformes order)

Satin Spar (commonly sold as Selenite)

Hydrous Calcium Sulfate (CaSO4·2H2O)

Sandstone with Manganese Dendrites/Oxide coatings

Arenite with Pyrolusite and Romanechite (MnO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Blue Banded Agate (Dyed)

Silicon Dioxide (SiO2) - variety of Chalcedony

Red Jasper (Polished)

Silicon Dioxide (SiO2) with Hematite inclusions

Blue Chalcedony (Tumbled)

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Chalcedony (variations like Agate or Jasper)

Chalcedony (SiO₂ - microcrystalline quartz)

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (CaSO4·2H2O)

Red Jasper with Quartz and Hematite

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Quartz Geode (Cracked Open)

Quartz (Silicon Dioxide - SiO2)

Shale

Shale (Lutite)

Sandstone

Arenite (primarily SiO2)

Satin Spar

Fibrous Gypsum (CaSO4·2H2O)

Orange Calcite

Calcium Carbonate (CaCO3)

Chert Pebble (Jasperoid/Flint)

Silicon Dioxide (SiO2) - cryptocrystalline quartz

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Pyrite

Iron Disulfide (FeS2)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)