Sedimentary (Fossiliferous)

Fossiliferous limestone pebble

Micritic to bioclastic limestone, composed mainly of calcite (CaCO₃)

Polished fossiliferous agate

Chalcedony (microcrystalline SiO₂), likely containing fossil coral or stromatoporoid structures

Weathered fossiliferous limestone

Calcitic limestone, primarily CaCO₃; possibly containing fossil or solution cavities

Weathered fossiliferous limestone

Calcitic limestone, predominantly calcium carbonate (CaCO₃), possibly bioclastic limestone

Tumbled fossiliferous limestone

Bioclastic limestone, primarily calcite (CaCO₃)

Polished fossiliferous limestone

Bioclastic carbonate rock, primarily calcite (CaCO₃)

Fossiliferous limestone pebble

Bioclastic limestone, chiefly calcite (CaCO₃), with fossil shell fragments

Limestone (fossiliferous or weathered)

Sedimentary carbonate rock primarily composed of calcium carbonate (CaCO3)

Weathered limestone fragment, possibly fossiliferous

Calcite-rich limestone (CaCO₃), possibly bioclastic limestone

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Chert (variably Oolitic or Fossiliferous)

Sedimentary Cryptocrystalline Quartz (SiO2)

Weathered fossiliferous limestone

Bioclastic limestone, primarily calcite (CaCO₃)

Weathered fossiliferous limestone

Bioclastic limestone, chiefly calcite (CaCO₃)

Sandstone (with Iron Staining)

Arenite (SiO2 predominantly)

Tumbled fossiliferous limestone

Fossil-bearing micritic limestone, commonly containing crinoid or shell fragments

Weathered fossiliferous limestone

Calcitic limestone, predominantly calcium carbonate (CaCO₃), possibly containing shell or coral fossil fragments

Fossiliferous Limestone with Brachiopod

Limestone (Calcium Carbonate, CaCO3) with Phylum Brachiopoda fossil

Fossiliferous Limestone (Crinoidal)

Crinoid Limestone (CaCO3 with fossil biological remains)

Fossiliferous Limestone (Coquina)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Coquina or Fossiliferous Limestone

Biogenic Limestone (Calcite/Aragonite CaCO3)

Coquina / Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate - CaCO3)

Fossiliferous Limestone (Crinoidal)

Calcium Carbonate (CaCO3) - Limestone containing bioclasts

Fossiliferous Shale Matrix

Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments

Fossiliferous Limestone (Crinoidal)

Calcite-bearing bioclastic packstone (CaCO3)

Coquina (Fossiliferous Limestone)

Biogenic Limestone (mostly CaCO3 / Calcium Carbonate)

Fossiliferous Limestone (Coquina)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Crinoidal)

Bioclastic Limestone (predominantly CaCO3)

Coquina / Fossiliferous Limestone

Calcite-rich Bioclastic Sedimentary Rock (CaCO3)

Fossiliferous Limestone (Coquina)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Brachiopod in Shale

Brachiopoda (Phylum) preserved in Carbonaceous Shale

Weathered sandstone (probable arkosic sandstone)

Clastic sandstone, mainly quartz (SiO₂) with feldspar and iron-oxide cement

Fossiliferous Limestone (Hash)

Bioclastic Grainstone / Calcarenite

Sandstone

Arenite (primarily SiO2)

Weathered porous limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic

Sandstone

Arenite (SiO2 based)

Fossiliferous limestone concretion

Calcite-rich limestone (primarily CaCO₃), possibly containing a fossil shell or coral fragment

Weathered fossiliferous limestone

Calcite-rich limestone (CaCO₃), possibly bioclastic or micritic limestone

Weathered limestone

Calcite-rich carbonate rock, primarily CaCO₃ (likely micritic or fossiliferous limestone)

Weathered limestone slab

Limestone, predominantly calcite (CaCO₃), possibly fossiliferous or dolomitic

Unidentified pale sedimentary rock, likely limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous or weathered micritic limestone

Fossiliferous Limestone with Crinoid Stem

Sedimentary Rock with Crinoidea Fossil

Weathered limestone fragment

Calcite-rich limestone (CaCO₃), possibly fossiliferous or brecciated