Sedimentary (Fossilized Organic Remains)

Banded Sandstone (Wonderstone)

Sandstone with Liesegang Rings (SiO2 with Iron Oxides)

Chert (Hagstone/Gasket Rock variant)

Chert (SiO2)

Ferruginous Sandstone

Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)

Chert (Flint)

Microcrystalline quartz (SiO2)

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with impurities such as Fe2O3

Jasper or Agate-bearing Chert

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Yellow Jasper

Chalcedony (SiO2) with goethite or limonite inclusions

Sandstone (with Limonite staining)

Arenite (FeOx-rich)

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone

Arenite (primarily SiO2 with various cementing agents)

Sandstone (likely Graywacke or Lithic Sandstone)

Arenite / Wacke (SiO2 based with lithic fragments)

Sandstone (Quartzose)

Arenite (SiO2 principal)

Sandstone (Quartzite-rich Pebble)

Arenite (composed primarily of SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Sandstone

Arenite (primarily SiO2)

Limestone

Calcium Carbonate (CaCO3)

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Sandstone (Ferruginous)

Arenite (Fe-rich SiO2)

Sandstone (River Cobble)

Arenite

Limestone

CaCO3 (principally composed of Calcite)

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)

Shale

Mudstone/Shale

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone with Bedding Planes

Arenite (Sedimentary rock composed primarily of sand-sized minerals)

Dalmatian Jasper / Dalmatian Stone

Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)

Dalmation Stone (Dalmation Jasper)

Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)

Conglomerate

Clastic Conglomerate (Lithic-rich)

Ironstone with Pyrite

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

Ferruginous Sandstone (Ironstone)

Ferruginous Sandstone / Limonite-cemented Quartz Sandstone

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

Ironstone Concretion (Limonite/Goethite)

Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)

Mica Schist

Mica Schist (primarily Muscovite and/or Biotite composition)

Mica Schist

Mica Schist

Orange Calcite

Calcite (Calcium Carbonate - CaCO3)

Druzy Quartz (part of a Geode)

Silicon Dioxide (SiO2)

Coral Fossil (Favosites)

Favosites (Extinct genus of tabulate corals)

Limestone

Calcium Carbonate (CaCO3)

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities