Organic Specimen (Fossil)

Sandstone

Clastic sedimentary rock (SiO2 primary)

Kambaba Jasper

Stromatolite Jasper (Microcrystalline Quartz with Fossilized Cyanobacteria)

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains)

Chert Concretion

Chert (Microcrystalline Quartz, SiO2)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclasts

Ironstone Concretion (Siderite Nodules)

Siderite (FeCO3) in Mudstone or Sandstone matrix

Sandstone

Clastic sedimentary rock (Quartz arenite)

Sandstone (Quartz-rich)

Arenite (SiO2 based)

Moss Agate

Silicon Dioxide with inclusions (SiO2 + impurities)

Spinosaurus Tooth

Spinosaurus aegyptiacus (fossilized in Hydroxyapatite)

Sandstone

Arenite

Fossilized Shark Tooth (Sand Tiger)

Carcharias sp. (Fossilized Tooth)

Red Sandstone

Sandstone (Quartz Arenite with Iron Oxide)

Sandstone

Arenite

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclastic inclusions

Limestone

Calcium Carbonate (CaCO3)

Sandstone

Arenite (SiO2 based)

Red Shale

Lutite (primarily composed of clay minerals and iron oxides like hematite, Fe2O3)

Coal

Bituminous Coal / Anthracite

Crinoid Stem Fossil (in matrix)

Crinoid (Class Crinoidea)

Hag Stone (Holey Rock / Fossiliferous Limestone)

Limestone (CaCO3) with natural erosion / fossil cavities

Sandstone

Arenite (SiO2 dominant)

Pyrite

Pyrite (Iron sulfide, FeS₂)

Fossil Shell (Bivalve)

Phylum Mollusca, Class Bivalvia

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)

Stromatolite

Laminated biogenic sedimentary structure (Cyanobacteria)

Fossilized Shark Tooth (Otodus obliquus)

Otodus obliquus (Mineral: Fluorapatite)

Fossil Shark Tooth

Phylum Chordata, Class Chondrichthyes (Possibly Cretalamna or Otodus)

Sandstone (Pebble)

Arenite (SiO2 based)

Limestone

Sedimentary rock composed primarily of Calcium Carbonate (CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Siltstone

Siltstone (primarily composed of silica and clay minerals)

Fossilized Turritella Gastropod (Internal Mold)

Turritella (Fossil Gastropod Crust)

Pyrite

Iron Disulfide (FeS2)

Fossil Coral (Rugose Coral / Horn Coral fragment)

Rugosa (Tetracoralla) / Calcite (CaCO3)

Sandstone (Ferruginous)

Arenite (with Iron Oxide cement)

Limestone

Calcium Carbonate (CaCO3)

Sandstone

Arenite

Shale with Iron Staining

Fissile Argillaceous Sedimentary Rock

Limestone

Calcium Carbonate (CaCO3)

Shale

Shale (Lutite)

Limestone

Calcium Carbonate (CaCO3)