Fossiliferous Limestone
Calcareous biomicrite / Calcium Carbonate (CaCO3)
sedimentary
Category
Organic Material (Likely A Fruit Or Berry)
Browse organic material (likely a fruit or berry) specimens identified by the Rock Identifier community.
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Petrified Wood / Fossilized Bone
Silicified / Mineralized Fossil (Silica SiO2)
fossil
Fossilized Dinosaur Bone
Permineralized Dinosaur Bone
fossil
Jasper
Chalcedony (SiO2)
mineral
Jasper
Silicon dioxide (Quartz variety), SiO2
sedimentary
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Chalcedony/Common Opal)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper Agate
Silicon dioxide (SiO2)
mineral
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral
Fossilized Shark Tooth
Chondrichthyes (Class) fossilized dentition
fossil
Gastropod Fossil
Gastropoda
fossil
Fossilized Tooth
Vertebrate Fossilized Tooth (Mineralized Biogenic Material)
fossil
Yellow Chert
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Fossiliferous Rock (likely Dinosaur Fossil in Matrix)
Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)
sedimentary
Petrified Wood (Silicified Fossil)
Silicified Wood (SiO2)
sedimentary
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite
Organic mineraloid
Polished amber-colored translucent stone, likely citrine or yellow chalcedony
Most consistent with quartz (SiO₂), potentially citrine; translucent yellow chalcedony is another possibility
mineral
Fossil tooth
Mineralized vertebrate tooth; exact animal and species cannot be determined from the image
fossil
Chert (Flint)
Silicon dioxide (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Limestone
Calcium carbonate (CaCO3)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)
sedimentary
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
igneous
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2) microcrystalline quartz
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities, microcrystalline quartz
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Mammoth Molar Fossil
Mammuthus primigenius (Tooth fragment)
fossil
Chert Nodules in Limestone
Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Sandstone (SiO2-dominated clastic rock)
sedimentary
Fossilized Nut / Coprolite / Concretion
Trace Fossil / Permineralized Plant Material
fossil
Fossilized Bivalve Shell
Class Bivalvia (fossilized)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Quartz-veined Limestone
Sedimentary limestone with quartz/calcite veinlets
sedimentary
Chert (Tan/Yellow variety)
Microcrystalline Quartz (SiO2)
sedimentary
Fossiliferous shale or mudstone with plant fossils
Carbonaceous mudstone/shale containing fossilized foliage, likely fern or seed-fern impressions
fossil
Jasper
Silicon Dioxide (SiO2)
mineral
Fossilized Shark Tooth or Bone Fragment
Vertebrate Fossil (likely Carcharodon or similar genus)
fossil
Chert Nodules (with Flint core)
Microcrystalline Quartz (SiO2)
sedimentary
Fossil Shark Tooth
Chondrichthyes (Class)
fossil