Rock Identifier

Category

Sedimentary (Fossil)

Browse sedimentary (fossil) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Fossil) in the encyclopedia

Fossil Opal

Fossiliferous Limestone

Fossiliferous Limestone

Bone Opal

Turritella Jasper

Turritella Agate

Turritella Agate

Amber

Petrified Wood

Diatomite

Guano

Conglomerate

Jet

Diatomaceous Earth

Chert (Field Stone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Field Stone)

Microcrystalline Quartz (SiO2)

Ferruginous Sandstone (Sandstone with iron oxide (Hematite/Limonite) cement) — sedimentary

Ferruginous Sandstone

Sandstone with iron oxide (Hematite/Limonite) cement

Mudstone (Argillite) — sedimentary

Mudstone

Argillite

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Piddock bored rock (Boring Stone) (Ichnofossil-bearing Limestone or Mudstone (trace fossils by Pholadidae)) — sedimentary

Piddock bored rock (Boring Stone)

Ichnofossil-bearing Limestone or Mudstone (trace fossils by Pholadidae)

Calligraphy Stone (Fossiliferous Stromatolite Limestone (also known as Arabic Script Stone, Miriam Stone, or Elephant Skin Jasper)) — sedimentary

Calligraphy Stone

Fossiliferous Stromatolite Limestone (also known as Arabic Script Stone, Miriam Stone, or Elephant Skin Jasper)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Liesegang Rings (in Sandstone or Siltstone) (Ferruginous Sandstone with Liesegang Banding) — sedimentary

Liesegang Rings (in Sandstone or Siltstone)

Ferruginous Sandstone with Liesegang Banding

Yellow Jasper with Dendritic Inclusions (Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions) — sedimentary

Yellow Jasper with Dendritic Inclusions

Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions

Ironstone Concretion (Siderite or Goethite Concretion) — sedimentary

Ironstone Concretion

Siderite or Goethite Concretion

Sandstone (Quartzose Sandstone Pebble) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Favosites Fossil (Honeycomb Coral) (Favosites (Order Favositida)) — sedimentary

Favosites Fossil (Honeycomb Coral)

Favosites (Order Favositida)

Limonite Concretion (Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Glauconitic Sandstone (Greensand) (Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)) — sedimentary

Glauconitic Sandstone (Greensand)

Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)

Weathered limestone or calcareous concretion (Calcite-rich carbonate rock; primarily calcium carbonate (CaCO₃), commonly calcite) — sedimentary

Weathered limestone or calcareous concretion

Calcite-rich carbonate rock; primarily calcium carbonate (CaCO₃), commonly calcite

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Red Sandstone (Clastic Terrigenous Sedimentary Rock (typically Hematitic Quartz Arenite or Arkose)) — sedimentary

Red Sandstone

Clastic Terrigenous Sedimentary Rock (typically Hematitic Quartz Arenite or Arkose)

Shale (Shale (clay-rich mudstone)) — sedimentary

Shale

Shale (clay-rich mudstone)

Likely pale limestone or calcite-rich rock (Calcite-bearing limestone; chiefly calcium carbonate (CaCO₃)) — sedimentary

Likely pale limestone or calcite-rich rock

Calcite-bearing limestone; chiefly calcium carbonate (CaCO₃)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Concretion (Septarian or Siderite Concretion) — sedimentary

Concretion

Septarian or Siderite Concretion

Limitation Concretion (Ironstone Concretion (Goethite/Limonite)) — sedimentary

Limitation Concretion

Ironstone Concretion (Goethite/Limonite)

Sandstone (Quartzose) (Arenite) — sedimentary

Sandstone (Quartzose)

Arenite

Coral Fossil (Favosites type) (Phylum Cnidaria, Class Anthozoa (often CaCO3 - Calcium Carbonate)) — sedimentary

Coral Fossil (Favosites type)

Phylum Cnidaria, Class Anthozoa (often CaCO3 - Calcium Carbonate)

Limestone (specifically Carboniferous Limestone) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (specifically Carboniferous Limestone)

Calcium Carbonate (CaCO3)

Manganese-coated Sandstone (Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)) — sedimentary

Manganese-coated Sandstone

Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)

Banded Sandstone (Arenite (with iron oxide banding)) — sedimentary

Banded Sandstone

Arenite (with iron oxide banding)

Concretion (Sedimentary Concretion (e.g., Siderite or Ironstone)) — sedimentary

Concretion

Sedimentary Concretion (e.g., Siderite or Ironstone)

Limestone (River or Sea Cobble) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (River or Sea Cobble)

Calcium Carbonate (CaCO3)

Sandstone Concretion (Clastic Sedimentary Concretion (primarily SiO2 with Fe2O3 cement)) — sedimentary

Sandstone Concretion

Clastic Sedimentary Concretion (primarily SiO2 with Fe2O3 cement)

Sandstone (Quartzose) (Arenite (SiO2 based)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2 based)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Hag Stone (Perforated sedimentary rock (typically limestone, sandstone, or flint)) — sedimentary

Hag Stone

Perforated sedimentary rock (typically limestone, sandstone, or flint)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Sandstone (Arenite (Siliclastic sedimentary rock)) — sedimentary

Sandstone

Arenite (Siliclastic sedimentary rock)