Sedimentary (Fossilized)

Banded Jasper (Mookaite / Chert)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Weathered sandstone or siltstone

Clastic sedimentary rock, chiefly quartz and feldspar grains cemented by clay, silica, or iron oxides

Fossil Coral

Tabulate Coral (potentially Favosites or Calapoecia)

Gastropod Steinkern (Internal Mold Fossil)

Gastropoda (Class); Internal mold or 'Steinkern' composed of Calcium Carbonate (CaCO3) or Sedimentary matrix

Chert (Common Opal/Chalcedony variety)

Microcrystalline Quartz (SiO2)

Agate

SiO2

Puddingstone (Gowganda)

Gowganda Formation Conglomerate

Fossiliferous Limestone with Brachiopod

Phylum Brachiopoda in calcitic matrix

Lepidodendron Fossil in Sandstone

Lepidodendron (Lycophytina, Lepidodendrales)

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Red sandstone

Quartz-rich sandstone, commonly ferruginous (Fe-oxide stained)

Chert (Jasper/Opaline variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Jasper

Microcrystalline Quartz (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Conglomerate

Conglomerate (Sedimentary Rock)

Limonite Geode (Ironstone Concretion)

Limonite [FeO(OH)·nH2O] with possible Quartz or Calcite interior

Red Jasper

Silicon Dioxide (SiO2) with Iron impurities

Pyrite

Iron Sulfide (FeS2)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Quartz-veined Sandstone Pebble

Quartzite-veined Arenite

Coal

Bituminous Coal / Anthracite

Weathered limestone

Calcite-rich carbonate rock (mostly CaCO₃)

Sandstone Pebble

Quartz Sandstone

Jasper

Microcrystalline Quartz (SiO2)

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Sandstone (Water-worn Pebble)

Clastic Sedimentary Rock (primarily SiO2)

Red Sandstone

Quartz Arenite (iron-stained)

Sandstone / Weathered Quartzite

Sandstone (Quartz Arenite)

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)

Ironstone Pebble

Sedimentary Ironstone (Hematite/Limonite-bearing)

Coquina / Shelly Sandstone

Calcareous Sandstone / Coquina

Fossiliferous Sandstone (with Quartz patch)

Sedimentary Sandstone with Silicified Shell Fragments

Moqui Marble (Concretion)

Iron Oxide Concretion (Hematite-cemented Sandstone)

Jasper

SiO2

Sandstone (with ripple marks)

Arenite / Quartz Sandstone

Sandstone and Conglomerate pebbles

Sedimentary clastic rock

Sandstone (with Iron Oxide)

Quartz Arenite / Ferruginous Sandstone (SiO2 with Fe2O3)

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Pebble)

Sandstone

Banded sandstone pebble

Lithic or quartz-rich sandstone; exact composition requires testing