Rock Identifier

Category

Sedimentary

Browse sedimentary specimens identified by the Rock Identifier community.

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

Sandstone (Quartzose Pebble)

Clastic sedimentary rock (primarily SiO2)

Sandstone Geode (Unbroken) (Siliciclastic sedimentary rock (primarily Quartz)) — sedimentary

Sandstone Geode (Unbroken)

Siliciclastic sedimentary rock (primarily Quartz)

Red Sandstone (Arkose) (Clastic Sedimentary Rock (Lithic Arkose)) — sedimentary

Red Sandstone (Arkose)

Clastic Sedimentary Rock (Lithic Arkose)

Sandstone (Water-worn Pebble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Water-worn Pebble)

Clastic sedimentary rock (primarily SiO2)

Anthracite Coal (Anthracite (Carbon-rich Sedimentary Rock)) — sedimentary

Anthracite Coal

Anthracite (Carbon-rich Sedimentary Rock)

Sandstone Concretion (Sedimentary Concretion (SiO2 or CaCO3 cemented)) — sedimentary

Sandstone Concretion

Sedimentary Concretion (SiO2 or CaCO3 cemented)

Sandstone with Quartz Veining (Clastic sedimentary rock (SiO2 dominated)) — sedimentary

Sandstone with Quartz Veining

Clastic sedimentary rock (SiO2 dominated)

Sandstone (with potential trace fossils) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with potential trace fossils)

Clastic sedimentary rock (primarily SiO2)

Coquina / Fossiliferous Limestone (Calcareous bioclastic sedimentary rock (CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Calcareous bioclastic sedimentary rock (CaCO3)

Bituminous Coal (Organic sedimentary rock (humic coal)) — sedimentary

Bituminous Coal

Organic sedimentary rock (humic coal)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

Banded Sandstone (Differential Weathering) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Banded Sandstone (Differential Weathering)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Quartzite-rich) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (primarily SiO2)

Shale or Mudstone (Based on appearance) (Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)) — Sedimentary

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Travertine (Terrestrial Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Travertine

Terrestrial Sedimentary Rock (Calcium Carbonate, CaCO3)

Sandstone (with potential Arkose/Lithic characteristics) (Arenite (Sedimentary rock composed of sand-sized grains)) — sedimentary

Sandstone (with potential Arkose/Lithic characteristics)

Arenite (Sedimentary rock composed of sand-sized grains)

Zebra Jasper (Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities) — sedimentary

Zebra Jasper

Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities

Chert Concretion (with typical hematite/limonite staining) (Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)) — sedimentary

Chert Concretion (with typical hematite/limonite staining)

Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)) — sedimentary

Sandstone

Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)

Pyrite (Iron Pyrite (FeS₂)) — Mineral

Pyrite

Iron Pyrite (FeS₂)

Sandstone (clastic) (Clastic Sedimentary Rock (primarily composed of SiO2)) — sedimentary

Sandstone (clastic)

Clastic Sedimentary Rock (primarily composed of SiO2)

Sandstone (Sandstone (clastic sedimentary rock, predominantly SiO2)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock, predominantly SiO2)

Sandstone (Clastic Sedimentary Rock (primarily Quartz, SiO2)) — sedimentary

Sandstone

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Quartz Geode (with Calcite influence) (Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)) — mineral

Quartz Geode (with Calcite influence)

Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)

Optical Calcite (Iceland Spar) (Calcite (CaCO3)) — mineral

Optical Calcite (Iceland Spar)

Calcite (CaCO3)

Quartz Geode (Cracked) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (Cracked)

Silicon Dioxide (SiO2)

Dyed Howlite (Dyed Red) (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

Dyed Howlite (Dyed Red)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Chert (Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Specular Hematite with Quartz and Limonite (Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)) — Mineral

Specular Hematite with Quartz and Limonite

Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Flint / Chert (Silicon dioxide (SiO2)) — sedimentary

Flint / Chert

Silicon dioxide (SiO2)

Native Gold (in earring form) (Gold (Au)) — mineral

Native Gold (in earring form)

Gold (Au)

Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Chert (Nodule) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Nodule)

Chert (Silicon Dioxide, SiO2)

Garnet (Almandine) (Almandine, Fe3Al2Si3O12) — mineral

Garnet (Almandine)

Almandine, Fe3Al2Si3O12

Limonite/Goethite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite/Goethite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

Pyrite with Iron Oxides (Fool's Gold in Matrix) (Iron Sulfide (FeS2)) — mineral

Pyrite with Iron Oxides (Fool's Gold in Matrix)

Iron Sulfide (FeS2)

Bamboo Leaf Jasper (Silicified Siltstone or Jasper (SiO2)) — sedimentary

Bamboo Leaf Jasper

Silicified Siltstone or Jasper (SiO2)

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

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Quartz Geode with Calcite (Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)) — Mineral/Geode

Quartz Geode with Calcite

Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)