Sedimentary (Silicified Fossiliferous Chalcedony)

Fossiliferous Limestone with Crinoid Stem fragment

Calcite (CaCO3) containing Crinoidea fossils

Fossiliferous Chert (with Brachiopod or Mollusk fragments)

Silicon dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions

Favosites Fossil (Honeycomb Coral)

Favosites (Extinct genus of tabulate coral)

Fossiliferous Limestone (Crinoid stem fossils)

Sedimentary Limestone with Crinoidea ossicles

Limestone (specifically Fossiliferous Limestone)

Calcium Carbonate (CaCO3)

Coquina Limestone (Fossiliferous Limestone)

Calcareous bioclastic sedimentary rock (CaCO3)

Fossiliferous Limestone with Crinoid stems

Calcite-rich Biogenic Sedimentary Rock (CaCO3)

Fossiliferous Limestone with Rugose Coral

Calcium Carbonate (CaCO3) featuring Rugosa (extinct order of solitary and colony corals)

Fossiliferous Limestone (with Coralline Inclusions)

Calcium Carbonate (CaCO3)

Fossiliferous Limestone with Crinoid stems

Limestone (CaCO3) containing Crinoidea fossils

Limestone (specifically Fossiliferous or Crinoidal Limestone)

Calcium Carbonate (CaCO3) - Calcite Rock

Fossiliferous Shale (with Vertebrate Bones)

Laminated Mudstone containing Fossilized Bone (Apatite)

Limestone (specifically Fossiliferous Limestone)

Calcium Carbonate (CaCO3)

Fossiliferous Chert with Brachiopod Impression

Chert (SiO2) containing Brachiopoda fossil remains

Fossilized Gastropod / Coral

Phylum Mollusca / Cnidaria (Silicified or Calcified)

Weathered sandstone or iron-stained limestone fragment

Likely quartz-rich sandstone (SiO₂) or calcitic limestone (CaCO₃); exact identification requires testing

Zebra Stone (Silicified Siltstone)

Silicified Siltstone with Quartz/Kaolinite inclusions

Fossiliferous Limestone with Crinoid Stem Impression

Calcium Carbonate (CaCO3) matrix with Crinoidea fossil

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Weathered vuggy quartz-rich rock (probable silicified limestone or quartz breccia)

Microcrystalline quartz (SiO₂) with calcite (CaCO₃), iron oxides, and minor clay minerals

Yellow Jasper Ocher

Limonitic Chert (SiO2 with FeO(OH)·nH2O)

Gastropod Steinkern (Internal Mold Fossil)

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

Agate Geode

Silicon Dioxide (SiO2)

Crushed Limestone

Calcite-rich Sedimentary Rock (CaCO3)

Fossiliferous Limestone with Brachiopod Mold

Calcium Carbonate (CaCO3) matrix containing Brachiopoda fossil impressions

Fossiliferous Limestone with Rugose Coral

Calcite (CaCO3) containing a Rugosa (Horn Coral) fossil

Fossiliferous Sandstone (with Brachiopod or Bivalve mold)

Clastic Sedimentary Rock with Macrofossil Mold

Fossiliferous Limestone with Rugose Coral

Lithostrotionella (Limestone Matrix - CaCO3)

Fossiliferous Limestone with Rugose Coral

Rugosa (order), typically preserved in CaCO3 (Calcite)

Fossiliferous Limestone with Crinoid Stem

Bioclastic Limestone (CaCO3)

Fossiliferous Limestone (Crinoidal Limestone)

Bioclastic grainstone (CaCO3)

Fossiliferous Limestone (containing Brachiopods)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone with Brachiopod shell

Calcium carbonate (CaCO3)

Fossiliferous Mudstone / River Pebble

Sedimentary rock with trace fossil or inclusion

Chert (Fossiliferous Chert/Flint)

Silicon Dioxide (SiO2)

Bauxite (Iron-stained Chert / Ironstone Aggregate)

Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))

Fossilized Tabulate Coral (Honeycomb Coral)

Favosites (Order: Tabulata)

Fossil Coral (likely Favosites or Honeycomb Coral)

Class Anthozoa, Order Tabulata, Genus Favosites

Limestone

Calcium Carbonate (CaCO3)

Banded limestone or marble

Calcite-dominated carbonate rock; likely banded marble (CaCO₃)

Banded Chert / Sandstone Pebble

Microcrystalline Quartz (SiO2) / Silicified Sandstone

Petrified Wood

Silicified wood (SiO2 - Silicon Dioxide)