Petrified Wood
Silicified Wood (mainly Quartz / SiO2)
fossil
Category
Sedimentary (Fossil)
Browse sedimentary (fossil) specimens identified by the Rock Identifier community.
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Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Petoskey Stone
Hexagonaria percarinata
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Gastropod Steinkern (Fossilized Snail Cast)
Phylum Mollusca, Class Gastropoda (Commonly CaCO3 or SiO2 after replacement)
Sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Limestone
Fossiliferous Calcarenite (CaCO3)
sedimentary
Coquina or Fossiliferous Limestone
Biogenic Limestone (Calcite/Aragonite CaCO3)
sedimentary
Fossiliferous Limestone with Brachiopod
Limestone (Calcium Carbonate, CaCO3) with Phylum Brachiopoda fossil
sedimentary
Coquina / Fossiliferous Limestone
Calcareous bioclastic sedimentary rock (CaCO3)
sedimentary
Petrified Wood / Red Jasper
Silicified wood (primarily Silicon Dioxide, SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Shale fragment
Shale (Laminated Mudstone)
sedimentary
Cowrie Shell Fossil
Cypraea sp.
fossil
Petrified Wood
Silicified Wood (mainly Quartz/Chalcedony, SiO2)
fossil
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 with various cementation agents)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based with various mineral cements)
sedimentary
Sandstone
Arenite (Siliclastic sedimentary rock), SiO2 + various minerals
sedimentary
Sandstone (specifically Arkose or Ferruginous Sandstone)
Sandstone (SiO2 with iron oxide inclusions)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Red Sandstone
Arenite with iron oxide (Hematite) cement
sedimentary
Sandstone with Bedding Planes
Arenite (Sedimentary rock composed primarily of sand-sized minerals)
sedimentary
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Sandstone)
sedimentary
Travertine (likely polished limestone)
Calcite-rich carbonate rock; predominantly CaCO₃
sedimentary
Limestone with Fossil Impression
Calcium Carbonate (CaCO3)
sedimentary
Ironstone Concretion
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Siderite Concretion (Nodule)
Iron Carbonate (FeCO3) Concretion
sedimentary
Amber
Succinite (Fossilized Tree Resin)
fossil
Fossilized Shark Tooth
Selachii (Elasmobranchii subclass)
fossil
Limestone with Fossil Inclusion
Calcium Carbonate (CaCO3) - Bioclastic Limestone
sedimentary
Fossilized Coral
Cnidaria fossil / Calcite-replaced coral
fossil
Limestone
Limestone (CaCO3)
sedimentary
Conglomerate
Conglomeratic Sandstone
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Chert Pebble
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (Quartz-rich)
Sandstone (SiO2 dominated)
sedimentary
Limestone with Fossil inclusions
Fossiliferous Limestone (CaCO3)
sedimentary
Limestone
Calcite-rich sedimentary rock (CaCO3)
sedimentary