Rock Identifier

Category

Sedimentary (Anthropogenic)

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

Learn about Sedimentary (Anthropogenic) in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Coal

Kambaba Jasper

Limestone

Asphalt Rock

Claystone

Mudstone

Sapropel

Bituminous Shale

Bituminous Shale

Shale with Trace Fossils (Fissile mudrock (Shale)) — sedimentary

Shale with Trace Fossils

Fissile mudrock (Shale)

Shale (Shale (clastic sedimentary rock)) — sedimentary

Shale

Shale (clastic sedimentary rock)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Shale (Shale (Lutite)) — sedimentary

Shale

Shale (Lutite)

Shale (Fissile mudstone (rich in clay minerals and quartz)) — sedimentary

Shale

Fissile mudstone (rich in clay minerals and quartz)

Shale (Fissile mudrock (composed primarily of clay minerals and quartz)) — sedimentary

Shale

Fissile mudrock (composed primarily of clay minerals and quartz)

Fossiliferous Sedimentary Rock (Sedimentary Rock with Invertebrate Fossil Imprint) — fossil

Fossiliferous Sedimentary Rock

Sedimentary Rock with Invertebrate Fossil Imprint

Quartz-veined Sandstone Pebble (Quartzose Sandstone with Quartz Veinlets) — sedimentary

Quartz-veined Sandstone Pebble

Quartzose Sandstone with Quartz Veinlets

Weathered iron-rich sandstone or ferruginous siltstone (Clastic sedimentary rock, likely quartz-rich sandstone cemented by iron oxides (Fe₂O₃/Fe₃O₄)) — sedimentary

Weathered iron-rich sandstone or ferruginous siltstone

Clastic sedimentary rock, likely quartz-rich sandstone cemented by iron oxides (Fe₂O₃/Fe₃O₄)

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

Banded Sandstone (River Pebble)

Arenite (SiO2 primarily)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Quartz, Sandstone, and Siltstone specimens (Silicon Dioxide (SiO2) and Clastic Sedimentary Rocks) — mineral and sedimentary

Quartz, Sandstone, and Siltstone specimens

Silicon Dioxide (SiO2) and Clastic Sedimentary Rocks

mineral and sedimentary

Sandstone (Arenite) — Sedimentary

Sandstone

Arenite

Yellow Ocher (Iron-rich Silt/Clay) (Goethite-rich Limonite (FeO(OH)qnH2O)) — sedimentary

Yellow Ocher (Iron-rich Silt/Clay)

Goethite-rich Limonite (FeO(OH)qnH2O)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

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

Quartz (Chert / Agate / Chalcedony)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Fossil gastropod shell (Fossilized gastropod, likely a small marine snail; exact genus cannot be determined from the image) — fossil

Fossil gastropod shell

Fossilized gastropod, likely a small marine snail; exact genus cannot be determined from the image

Banded Sedimentary Rock (Sedimentary rock with Liesegang banding) — sedimentary

Banded Sedimentary Rock

Sedimentary rock with Liesegang banding

Likely gray mudstone or shale fragment (Fine-grained siliciclastic sedimentary rock; exact composition cannot be determined from the image) — sedimentary

Likely gray mudstone or shale fragment

Fine-grained siliciclastic sedimentary rock; exact composition cannot be determined from the image

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

Limonite Concretion

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

Weathered quartz-rich sandstone (Quartz arenite to feldspathic sandstone, primarily SiO₂ with minor feldspar, mica, and iron oxides) — sedimentary

Weathered quartz-rich sandstone

Quartz arenite to feldspathic sandstone, primarily SiO₂ with minor feldspar, mica, and iron oxides

Quartzite Sandstone / Quartz Sandstone (Quartz Sandstone (SiO2 with minor mineral impurities)) — sedimentary

Quartzite Sandstone / Quartz Sandstone

Quartz Sandstone (SiO2 with minor mineral impurities)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Shale (Fissile mudrock (composed of clay-sized particles and detrital grains)) — sedimentary

Shale

Fissile mudrock (composed of clay-sized particles and detrital grains)

Shale (Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)) — sedimentary

Shale

Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)

Shale (Clastic sedimentary rock (primarily clay and silt minerals)) — sedimentary

Shale

Clastic sedimentary rock (primarily clay and silt minerals)

Fossil in Shale (Fossiliferous Shale) — sedimentary

Fossil in Shale

Fossiliferous Shale

Chert (Silicon dioxide (SiO2)) — sedimentary

Chert

Silicon dioxide (SiO2)

Fossil oyster shell (Oyster (family Ostreidae), preserved as calcite/aragonite shell) — fossil

Fossil oyster shell

Oyster (family Ostreidae), preserved as calcite/aragonite shell

Fossilized Shell Fragment (Invertebrate fossil / Brachiopod or Mollusk shell fragment (Calcium carbonate, CaCO3)) — fossil

Fossilized Shell Fragment

Invertebrate fossil / Brachiopod or Mollusk shell fragment (Calcium carbonate, CaCO3)

Weathered sandstone or arkosic sandstone (Clastic sandstone, likely quartz–feldspar-rich (arkose)) — sedimentary

Weathered sandstone or arkosic sandstone

Clastic sandstone, likely quartz–feldspar-rich (arkose)

Flesh-toned Siltstone (Siltstone (composed of microscopic Quartz and Feldspar grains)) — sedimentary

Flesh-toned Siltstone

Siltstone (composed of microscopic Quartz and Feldspar grains)

Stromatolite (Biogenic sedimentary rock / CaCO3) — sedimentary

Stromatolite

Biogenic sedimentary rock / CaCO3

Tumbled banded gneiss (Gneiss, a foliated metamorphic rock; exact mineral composition cannot be determined from the image) — metamorphic

Tumbled banded gneiss

Gneiss, a foliated metamorphic rock; exact mineral composition cannot be determined from the image

Banded gneiss (Foliated gneiss, likely quartz–feldspar–biotite gneiss) — metamorphic

Banded gneiss

Foliated gneiss, likely quartz–feldspar–biotite gneiss

Banded gneiss (Gneiss, a foliated metamorphic rock; likely quartz–feldspar–mica gneiss) — metamorphic

Banded gneiss

Gneiss, a foliated metamorphic rock; likely quartz–feldspar–mica gneiss

Clam Fossil (Bivalvia fossil) — fossil

Clam Fossil

Bivalvia fossil

Sedimentary Sandstone with Iron Oxide (Ferruginous Sandstone) — sedimentary

Sedimentary Sandstone with Iron Oxide

Ferruginous Sandstone

Brachiopod Fossil in Sedimentary Matrix (Phylum Brachiopoda in Siltstone/Mudstone matrix) — fossil

Brachiopod Fossil in Sedimentary Matrix

Phylum Brachiopoda in Siltstone/Mudstone matrix