Rock Identifier

Category

Sedimentary (Biogenic Sediment Or Biological Remain)

Browse sedimentary (biogenic sediment or biological remain) specimens identified by the Rock Identifier community.

Muscovite Schist with Quartz (KAl2(AlSi3O10)(OH)2 in Schistose matrix) — metamorphic

Muscovite Schist with Quartz

KAl2(AlSi3O10)(OH)2 in Schistose matrix

Chalcedony (Agate/Chert) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Chert)

Silicon Dioxide (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Limestone (Weathered) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Weathered)

Calcium Carbonate (CaCO3)

Fossilized Crab Carapace (Concretion) (Decapoda (fossil), typically preserved in calcite or siderite concretion) — sedimentary

Fossilized Crab Carapace (Concretion)

Decapoda (fossil), typically preserved in calcite or siderite concretion

Sandstone (Ferruginous) (Sandstone (primarily SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with Fe2O3 cement)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Ferruginous) (Arenite (composed primarily of SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

Siltstone (Siltstone) — sedimentary

Siltstone

Siltstone

Sandstone (Ferruginous) (Arenite (Siliclastic Sedimentary Rock)) — sedimentary

Sandstone (Ferruginous)

Arenite (Siliclastic Sedimentary Rock)

Fossil Coral (Rugose Coral Fragment) (Rugosa (extinct order of solitary and colonial corals)) — sedimentary

Fossil Coral (Rugose Coral Fragment)

Rugosa (extinct order of solitary and colonial corals)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (likely Graywacke or Lithic Sandstone) (Clastic Sedimentary Rock) — sedimentary

Sandstone (likely Graywacke or Lithic Sandstone)

Clastic Sedimentary Rock

Sandstone (specifically Red Sandstone) (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone (specifically Red Sandstone)

Arenite (primarily Quartz, SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone with Iron Concretion (Arenite with Limonite/Goethite Concretion) — sedimentary

Sandstone with Iron Concretion

Arenite with Limonite/Goethite Concretion

Amber with inclusion (Amber (Fossilized Tree Resin)) — mineral

Amber with inclusion

Amber (Fossilized Tree Resin)

Sandstone (Arenite (SiO2 based with quartz grains)) — sedimentary

Sandstone

Arenite (SiO2 based with quartz grains)

Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Fossilized Shark Tooth (Otodus obliquus (Mackerel Shark)) — sedimentary

Fossilized Shark Tooth

Otodus obliquus (Mackerel Shark)

Chert (Iron-stained) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (Iron-stained)

Chert (Cryptocrystalline Quartz, SiO2)

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

Sandstone

Arenite (composed primarily of Quartz, SiO2)

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Siltstone (Siltstone (fined-grained clastic sedimentary rock)) — sedimentary

Siltstone

Siltstone (fined-grained clastic sedimentary rock)

Potassium Feldspar (Orthoclase) (KAlSi3O8) — mineral

Potassium Feldspar (Orthoclase)

KAlSi3O8

Shale (Shale (composition varies: primarily clay minerals and quartz)) — sedimentary

Shale

Shale (composition varies: primarily clay minerals and quartz)

Crushed Limestone Aggregate (Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Crushed Limestone Aggregate

Limestone (Calcium Carbonate, CaCO3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (lithic wacke/arenite) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (lithic wacke/arenite)

Clastic sedimentary rock (primarily SiO2)

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Garnet (Almandine) (Almandine (Fe3Al2(SiO4)3)) — metamorphic

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

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

Sandstone

Sandstone (Sedimentary rock composed of silicate grains)

Belemnoit (Fossil) (Belemnoidea (Order), Rostrum / Guard) — sedimentary

Belemnoit (Fossil)

Belemnoidea (Order), Rostrum / Guard

Sandstone (Arenite) — sedimentary

Sandstone

Arenite