Rock Identifier

Category

Sedimentary (Fossilized)

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

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Geode (unopened) or Calcareous Nodule (Siliceous or Calcareous Concretion/Nodule) — sedimentary

Geode (unopened) or Calcareous Nodule

Siliceous or Calcareous Concretion/Nodule

Sandstone (likely Arkosic) (Clastic Sedimentary Rock (Sandstone)) — sedimentary

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (Sandstone)

Sandstone (Ferruginous) (Clastic Sedimentary Rock (Litharenite)) — sedimentary

Sandstone (Ferruginous)

Clastic Sedimentary Rock (Litharenite)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Tumbled/River Pebble) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Tumbled/River Pebble)

Arenite (composed primarily of SiO2)

Shale with Vein Infillings (Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.) — Sedimentary Rock

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

Sedimentary Rock

Limonite / Ironstone Nodule (Limonite (Hydrated iron(III) oxide-hydroxide), FeO(OH)·nH2O) — mineral

Limonite / Ironstone Nodule

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

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Chert (often called Flint when dark) (Sedimentary cryptocrystalline quartz (SiO2)) — sedimentary

Chert (often called Flint when dark)

Sedimentary cryptocrystalline quartz (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Sandstone (Sandstone (Sedimentary rock composed of silicate grains)) — sedimentary

Sandstone

Sandstone (Sedimentary rock composed of silicate grains)

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

Sandstone (River Pebble)

Arenite (primarily SiO2)

Sandstone Pebbles (Arenite (Sedimentary rock composed of sand-sized grains)) — sedimentary

Sandstone Pebbles

Arenite (Sedimentary rock composed of sand-sized grains)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Glauconite (Sandstone or Shale) (Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2) — sedimentary

Glauconite (Sandstone or Shale)

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

Sandstone (Ferruginous) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Fossiliferous Limestone (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Metaconglomerate (Metaconglomerate (Quartzite conglomerate)) — metamorphic

Metaconglomerate

Metaconglomerate (Quartzite conglomerate)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

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

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

Conglomerate (Clastic sedimentary rock (Polymictic Conglomerate)) — sedimentary

Conglomerate

Clastic sedimentary rock (Polymictic Conglomerate)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Bituminous Coal (Organic Sedimentary Rock (Carbon-based)) — sedimentary

Bituminous Coal

Organic Sedimentary Rock (Carbon-based)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Conglomerate (Conglomerate (Detrital Sedimentary Rock)) — sedimentary

Conglomerate

Conglomerate (Detrital Sedimentary Rock)

Gastropod Fossil (Snail Steinkern) (Class Gastropoda fossil, composed of Calcium Carbonate (CaCO3)) — sedimentary

Gastropod Fossil (Snail Steinkern)

Class Gastropoda fossil, composed of Calcium Carbonate (CaCO3)

Sandstone concretion (Ironstone-stained) (Arenite with Limonite/Hematite staining (Silica-based with Iron Oxides)) — sedimentary

Sandstone concretion (Ironstone-stained)

Arenite with Limonite/Hematite staining (Silica-based with Iron Oxides)

Coal (Bituminous or Anthracite coal (carbon-rich sedimentary rock)) — sedimentary

Coal

Bituminous or Anthracite coal (carbon-rich sedimentary rock)

Sandstone (likely Ferruginous) (Arenite (SiO2 based with Fe2O3/FeO(OH) cement)) — sedimentary

Sandstone (likely Ferruginous)

Arenite (SiO2 based with Fe2O3/FeO(OH) cement)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 cementation)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 cementation)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone with Quartz Vein (Arenite with SiO2 intrusion) — sedimentary

Sandstone with Quartz Vein

Arenite with SiO2 intrusion

Sandstone (Water-worn Cobble) (Arenite (SiO2 based)) — sedimentary

Sandstone (Water-worn Cobble)

Arenite (SiO2 based)

Chert / Flint (Cryptocrystalline quartz (SiO2)) — Sedimentary

Chert / Flint

Cryptocrystalline quartz (SiO2)