Petrified Wood
Silicified Wood (SiO2)
metamorphic
Category
Igneous And Fossil
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Limestone
Calcium Carbonate (CaCO3)
sedimentary
Crushed Stone (Gravel/Aggregates)
Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)
sedimentary and igneous (mixed)
Chert (containing small fossils)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (SiO2 primary)
sedimentary
Fossil Coral (Favosites)
Favosites (Order: Tabulata, Phylum: Cnidaria)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Limestone
Limestone (Calcium Carbonate - CaCO3)
sedimentary
Chert (containing fossil leaf impression)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Ferruginous Sandstone (with ripple marks)
Arenite with Iron-Oxide (Fe2O3) cement
sedimentary
Siltstone or Fine-grained Sandstone pebble
Siltstone (primarily SiO2 with clay minerals)
sedimentary
Sandstone Concretion
Limonitic Sandstone Concretion
sedimentary
Kambaba Jasper (Crocodile Jasper)
Stromatolite (Fossilized Algae)
sedimentary
Chert (Hagstone/Adder Stone)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Ironstone Concretion
Siderite or Ferruginous Concretion (FeCO3 or Iron Oxides)
sedimentary
Petoskey Stone (Fossilized Rugose Coral)
Hexagonaria percarinata (Calcium Carbonate, CaCO3)
sedimentary
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Arenite (primarily SiO2 with iron oxide cementation)
sedimentary
Sandstone (with Iron Staining)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Ferruginous Sandstone (Ironstone)
Ferruginous Sandstone / Limonite-cemented Quartz Sandstone
sedimentary
Limestone with Weathering Rind
Calcium Carbonate (CaCO3) - Bioclastic or Micritic Limestone
sedimentary
Red Sandstone
Arenite (Iron-rich Sandstone)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Conglomerate
Conglomerative Sedimentary Rock
sedimentary
Red Sandstone
Arenite (primarily SiO2 with hematite/iron oxide coating)
sedimentary
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary
Chert (Quartz Pebble)
Silicon Dioxide (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
sedimentary
Silty Shale or Mudstone
Siltstone/Mudstone (Clastic Sedimentary Rock)
sedimentary
Limestone with Fossil Fragments
Bioclastic Limestone (CaCO3)
sedimentary
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Banded Chert
Silicon Dioxide (SiO2)
sedimentary
Banded Chert
Silicon Dioxide (SiO2)
sedimentary
Coral Fossil (Favosites)
Favosites (Calcite/Calcium Carbonate, CaCO3)
sedimentary
Flexicalymene Trilobite Fossil
Flexicalymene meeki (Order Phacopida, Family Calymenidae)
sedimentary
Dinosaur Fossil (Skull)
Dinosauria fossilis (Petrified Hydroxyapatite / Calcium Carbonate)
sedimentary
Calamites Fossil in Sandstone
Calamites (Genus) in Lithic Sandstone
sedimentary
Fossil Coral (Rugose)
Rugosa (Order), often preserved in Limestone (CaCO3)
sedimentary