Sedimentary (Jasper), Mineral (Aquamarine)

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Conglomerate

Conglomerate (clastic sedimentary rock)

Pyrite

Iron Disulfide (FeS2)

Hematite

Iron (III) Oxide (Fe2O3)

Travertine (Ceramic Tile)

Terrestrial Sedimentary Rock / Calcium Carbonate (CaCO3)

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

Sandstone

Arenite (SiO2 based)

Sandstone (Quartzose)

Arenite (SiO2 principal)

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Pyrite

Iron Disulfide (FeS2)

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (SiO2 major component)

Banded Iron Formation (BIF) / Tiger Iron variety

Banded Iron Formation (predominantly Hematite, Magnetite, and Chert/Quartz - SiO2 + Fe2O3)

Cinnabar in Matrix

Cinnabar (Mercury(II) sulfide, HgS)

Septarian Nodule (Septarian Dragon Stone)

Septarian concretion (composition: Calcite CaCO3, Aragonite CaCO3, and Limestone/Clay)

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Ferruginous)

Arenite (variable SiO2 with Fe2O3 staining)

Sandstone (Ferruginous)

Sandstone (mainly SiO2 with Fe2O3 staining)

Sandstone (likely Greywacke or Lithic Sandstone)

Arenite / Wacke

Sandstone

Arenite (primarily composed of SiO2)

Quartz Conglomerate

Quartz Conglomerate (clastic sedimentary rock)

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

Caribbean Calcite

Calcium Carbonate (CaCO3) with Aragonite (CaCO3)

Sandstone Concretion

Clastic Sedimentary Concretion (primarily SiO2 with Fe2O3 cement)

Geode (Unopened)

Siliceous Geode (SiO2)

Geode Nodules / Chalcedony Geode

Silicon Dioxide (SiO2) - Amorphous to Cryptocrystalline Quartz

Botryoidal Chalcedony (likely Chert or Agatized Coral)

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone (with Feldspathic/Arkose qualities)

Arenite (primarily SiO2 with KAlSi3O8 components)

Sandstone (Ferruginous)

Arenite with Iron Oxide (Limonite/Hematite) coating

Red Sandstone

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Marble

Recrystallized Calcite (CaCO3)

Sandstone

Arenite (composed primarily of SiO2)

Megalodon Shark Tooth Fossil

Otodus megalodon (fossilized in sedimentary matrix)