Sedimentary (Fossiliferous)

Weathered limestone fragment

Limestone, predominantly calcite (CaCO₃)

Limestone

Calcium Carbonate (CaCO3)

Limestone (Micrite/Chalky variety)

Calcium Carbonate (CaCO3)

Fossiliferous limestone

Bioclastic carbonate rock, primarily calcite (CaCO₃), containing fossil shell fragments and molds

Weathered fossiliferous limestone fragment, possibly fossil coral or shell material

Indeterminate carbonate fossil in calcitic limestone; likely composed mainly of calcite (CaCO₃), but species identification is not possible from this image alone

Weathered sandstone or arkosic conglomeratic sandstone

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

Rounded sandstone pebble

Quartz-rich sandstone (primarily SiO₂), possibly arkosic sandstone

Limestone

Calcium Carbonate (CaCO3)

Calligraphy Stone

Mariam Jasper (Fossiliferous Limestone composed of Hematite and Shell remains)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Coquina / Shell Limestone)

Bioclastic Limestone (CaCO3)

Fossiliferous Chert (Chert with Crinoid Stem Impression)

Chert (SiO2) with fossil Anthozoan or Crinoid columnals

Fossiliferous Limestone (Coquina / Shell Limestone)

Bioclastic Limestone (CaCO3)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Coquina / Shell Bed)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous pebble, possibly a crinoid or shell fragment

Indeterminate bioclast in a dark sedimentary matrix; likely carbonate fossil material (calcite, CaCO₃)

Weathered fossil-bearing limestone, possibly coral or shell limestone

Calcite-rich limestone (CaCO₃); fossil identity is uncertain from the photograph

Fossil gastropod (snail)

Fossilized gastropod shell, likely a marine mollusk; exact genus cannot be determined from the image

Light-colored limestone (probable fossiliferous or micritic limestone)

Calcite-rich carbonate rock; predominantly CaCO₃ (calcite)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Limestone (CaCO3)

Fossiliferous Limestone (Coquina / Shell Limestone)

CaCO3 (Calcium Carbonate)

Fossiliferous Limestone (Coquina / Shell Conglomerate)

Bioclastic Limestone (composed primarily of CaCO3)

Fossiliferous Limestone (Chert/Clay mixed)

Calcium Carbonate (CaCO3) / Silicon Dioxide (SiO2)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (CaCO3)

Worn River Pebble with Fossil Indentation

Sedimentary Rock with Fossil Infill

Weathered iron-rich sandstone or lateritic rock

Ferruginous sandstone, primarily quartz (SiO₂) with iron oxides such as hematite/goethite

Weathered sandstone boulder

Sandstone, chiefly quartz (SiO₂) with feldspar and iron-oxide cement

Rounded quartz-rich sandstone pebble

Quartz arenite (sandstone), composition mainly SiO₂ with minor feldspar, mica, and iron-oxide cement

Limestone

Calcium Carbonate (CaCO3)

Shale

Shale (fine-grained clastic sedimentary rock)

Limestone (Cliff Formation)

Limestone (predominantly CaCO3 as calcite)

Carved limestone architectural fragment

Limestone, predominantly calcite (CaCO₃), possibly weathered fossiliferous or oolitic limestone

Calcite-rich limestone

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

Weathered limestone

Calcite-rich carbonate rock (mostly CaCO₃), possibly fossiliferous limestone

Limestone

Calcite-rich limestone (primarily CaCO₃)

Weathered gray sandstone or siltstone

Clastic siliciclastic rock, primarily quartz and feldspar grains cemented by silica or carbonate

Turritella Agate

Elimia tenera silicified fossiliferous chalcedony

Rounded river cobbles, likely weathered sandstone/mudstone and quartz-rich rock

Uncertain from photograph; probable lithologies include quartz sandstone, siltstone/mudstone, and locally altered volcanic or metamorphic clasts