Igneous And Fossil

Rugose Coral (Horn Coral) Fossil in Limestone

Order Rugosa (commonly Grewingkia or Zaphrentis genus)

Crinoid and Coral Fossils in Limestone

Fossiliferous Limestone with Rugosa (order) and Crinoidea (class)

Petrified Wood

Silicified Wood (primarily Chalcedony or Quartz, SiO2)

Fossilized Shark Tooth

Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)

Petrified Wood

Silicified Wood (SiO2)

Fossiliferous Limestone

Fossiliferous Calclutite / Bio-calcarenite (CaCO3)

Fossil Coral (Rugose Coral Fragment)

Rugosa (extinct order of solitary and colonial corals)

Granite

Phaneritic Plutonic Felsic Rock (SiO2 > 69%)

Coal (Bituminous or Anthracite)

Carbonaceous sedimentary rock (primarily Carbon, C)

Pyrite

Iron Sulfide (FeS2)

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Turritella Fossil

Turritella (Class Gastropoda, Family Turritellidae)

Ironstone Concretion

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Devil's Toenail

Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)

Fossiliferous Limestone

Biogenic Limestone (CaCO3)

Petrified Wood

Silicified Wood (SiO2)

Sandstone

Arenite (primarily Quartz, SiO2)

Fossilized Shark Tooth

Carcharocles or Otodus sp. (Micro-fossilized)

Sandstone

Arenite (SiO2 primarily)

Sandstone Pebbles

Arenite

Sandstone

Arenite

Sandstone

Arenite (SiO2 predominantly)

Coral Fossil (Petoskey-style or Colonial)

Hexagonaria percarinata (Order: Rugosa)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Fossilized Shell Fragment

Bivalvia or Gastropoda (Class) fragment

Fossil Brachiopod Cast (Atrypa species)

Phylum Brachiopoda, Class Rhynchonellata, Order Atrypida

Fossiliferous Limestone

Sedimentary Limestone (CaCO3) containing Crinoid or Brachiopod remains

Fossilized Bored Limestone

Limestone with Ichnofossils (Gastrochaenolites or Entobia)

Limestone with Gastropod Fossil

Sedimentary Calcium Carbonate (CaCO3) with Gastropoda inclusion

Limestone with Fossil Inclusion

Calcium Carbonate (CaCO3)

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

Coquina / Fossiliferous Limestone

Bioclastic Limestone (CaCO3)

Sandstone

Arenite (Siliclastic sedimentary rock)

Sandstone Pebbles

Arenite

Sandstone

Arenite (SiO2 based)

Sandstone (Ferruginous)

Clastic sedimentary rock (SiO2 with Fe2O3)

Sandstone (with Iron Staining)

Arenite

Sandstone

Arenite (SiO2 primarily)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Sandstone

Arenite (SiO2 primarily)

Sandstone

Arenite (primarily SiO2)