Petrified Wood
Fossilized plant material (Silicon dioxide - SiO2)
fossil
Category
Organic Material
Browse organic material specimens identified by the Rock Identifier community.
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Petrified Wood
Silicified wood (primarily quartz, SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossilized Bone
Vertebrate Fossil (Biogenic sediment)
fossil
Jasper
Cryptocrystalline quartz, SiO2
sedimentary
Fossilized Bone
Fossilized vertebrate bone
fossil
Petrified Wood
Petrified Wood (Silicified Wood)
fossil
Fossilized Shell
Invertebrate fossil (phylum Mollusca)
fossil
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Petrified Wood
Silicified wood (SiO2)
fossil
Fossilized Gastropod Shell
Gastropoda (calcium carbonate / aragonite)
fossil
Petrified Wood
Silicified wood (SiO2)
sedimentary
Petrified Wood
Silicified wood (SiO2)
fossil
Fossilized Bone
Permineralized Dinosaur or Megafauna Bone
fossil
Shark Tooth Fossil
Chondrichthyes dentition
fossil
Fossilized Shell Fragment
Invertebrate fossil / Brachiopod or Mollusk shell fragment (Calcium carbonate, CaCO3)
fossil
Petrified Wood
Silicified wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Black Onyx and Mother of Pearl
Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)
mineral
Petrified Wood
Silicified Wood / Fossilized Xylem
fossil
Petrified Wood
Silicified wood (SiO2)
sedimentary
Fossilized Shark Tooth
Chondrichthyes teeth
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified wood (SiO2)
sedimentary
Clam Fossil
Bivalvia fossil
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Likely bituminous coal
Coal, predominantly carbon-rich organic matter with variable maceral and mineral content
sedimentary
Limestone with Vug
Calcium Carbonate (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Coquina / Limonite-stained Limestone
Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)
sedimentary
Petrified Wood
Silicified wood (permineralized organic tissue)
fossil
Fossil Shark Tooth
Chondrichthyes (fossilized dentition)
fossil
Fossil Snail Shell
Gastropoda fossil
fossil
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Shark Tooth Fossil
Chondrichthyes fossil
fossil
Agate with Fossil Bone
Silicified bone in Chalcedony (SiO2)
fossil
Fossilized Fish Vertebra
Vertebrata
fossil
Shark Tooth Fossil
Carcharocles megalodon or related shark taxa (Fossilized dentition)
fossil
Nacre (Mother of Pearl)
Nacre (Biogenic Aragonite/Calcite composite, CaCO3)
mineral