Mineralized Fossil

Weathered limestone

Calcitic limestone, mainly calcium carbonate (CaCO₃)

Crinoid Stem Fossil in Chert

Crinoid columnal ossicles (phylum Echinodermata) embedded in microcrystalline quartz (chert)

Crinoid Stalk in Limestone

Crinoid fossil in Biomicrite (Limestone)

Fossilized Shark Tooth

Chondrichthyes (Class)

Rounded iron-rich pebble

Likely hematite/goethite-bearing quartzite or ironstone; exact identification requires testing

Green-and-gold apatite-bearing rock, possibly epidote skarn

Apatite-group mineral, commonly fluorapatite (Ca₅(PO₄)₃F), with probable epidote and quartz; exact identification requires testing

Orthoceras Fossil in Limestone

Orthoceras (extinct genus of cephalopods) in Carboniferous or Devonian Limestone

Fossiliferous Sandstone Pebble (with Crinoid / Shell Impression)

Sandstone containing fossiliferous inclusions (SiO2 matrix with calcite/silica cast fossil)

Polished turquoise

Turquoise — hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Fossiliferous Limestone

Calcium carbonate matrix with macrofossils (CaCO3)

Fossilized Shark Tooth (likely Sand Tiger Shark)

Carcharias taurus (fossilized hydroxyapatite/calcium phosphate)

Fossil Shark Tooth

Chondrichthyes (class)

Sandstone concretion

Arenite sedimentary rock (concretion/nodule)

Fossilized Bone Chunk

Permineralized Vertebrate Bone (indeterminant)

Fossil Shark Tooth

Chondrichthyes (Class)

Coprolite

Fossilized Feces

Fossiliferous limestone

Calcarenite/bioclastic limestone, predominantly calcite (CaCO₃)

Quartz-rich metamorphic rock, likely quartzite

Quartzite; predominantly microcrystalline to granular SiO₂, possibly with mica and feldspar

Limonite (Iron-rich Siltstone / Sandstone base)

Hydrous ferric oxide mixture (FeO(OH)·nH2O)

Fossilized Vertebra

Chordata fossil (Vertebra)

Fossil Shell

Invertebrate fossil (Mollusca)

Fossilized Bone

Permineralized Vertebrate Bone

Sea Urchin Fossil

Echinoidea (test/fossil)

Fossilized Shark Tooth

Elasmobranchii (fossilized matrix/root section)

Tumbled rhodonite

Rhodonite, manganese inosilicate (MnSiO₃), commonly mixed with quartz and manganese oxides

Ferruginous Sandstone Concretion (Ironstone Phosphorite)

Ferruginous Sandstone (variable Fe-oxide/hydroxide composition)

Crinoid Stem Fossil in Matrix

Crinoid (Class Crinoidea) in Limestone/Siltstone matrix

Tumbled, weathered limestone or calcareous concretion

Calcite-rich limestone; predominantly calcium carbonate (CaCO₃)

Starfish Fossil

Asteroidea fossil

Fossiliferous limestone

Bioclastic carbonate rock, primarily calcite (CaCO₃)

Quartz-rich breccia or altered granite fragment

Polymineralic quartz–feldspar rock, likely hydrothermally altered granite/pegmatite

Mosasaur Tooth

Mosasaurus beaugei (Fossilized Tooth)

Shark Tooth Fossil

Selachii fossil

Iron-rich breccia (likely hematite–goethite breccia)

Hematite (Fe₂O₃) and goethite (FeO(OH)) in a silicified or iron-cemented breccia

Dark river-worn cobble, possibly basalt or fine-grained volcanic rock

Likely basaltic rock; exact identification requires a fresh surface and tests

Brecciated quartz-rich rock, possibly silicified breccia

Silica-rich breccia; chiefly microcrystalline quartz (SiO₂), with possible calcite and iron-oxide staining

Fossilized Shark Tooth

Chondrichthyes (class) fossilized tooth

Fossil Shark Tooth

Chondrichthyes (Class)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Biogenic Fossils

Fossiliferous Limestone (Crinoidal)

Calcite-bearing bioclastic packstone (CaCO3)

Chert or flint with chalcedony/quartz veins

Microcrystalline silica: primarily quartz (SiO₂), including chalcedony; possible fossiliferous limestone or silicified material

Fossilized Coral (Petrified Coral)

Anthozoa fossil