Rock Identifier

Category

Sedimentary

Browse sedimentary specimens identified by the Rock Identifier community.

Learn about Sedimentary in the encyclopedia

Argillite

Arkose

Banded Iron Formation

Banded Iron Formation

Bauxite

Bituminous Coal

Bituminous Coal

Bituminous Shale

Bituminous Shale

Black Shale

Bog Iron

Breccia

Brecciated Jasper

Brecciated Jasper

Bumblebee Jasper

Bumblebee Jasper

Calcarenite

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

Quartzite Sandstone / Quartz Sandstone

Quartz Sandstone (SiO2 with minor mineral impurities)

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

Fossiliferous Sedimentary Rock

Sedimentary Rock with Invertebrate Fossil Imprint

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

Chert (Silicon dioxide (SiO2)) — sedimentary

Chert

Silicon dioxide (SiO2)

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)

Sandstone and Conglomerate pebbles (Sedimentary clastic rock) — sedimentary

Sandstone and Conglomerate pebbles

Sedimentary clastic rock

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

Fossil oyster shell

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

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

Shale (Sedimentary pelitic rock) — sedimentary

Shale

Sedimentary pelitic rock

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Banded Sedimentary Rock

Sedimentary rock with Liesegang banding

Sandstone (Arenite) — Sedimentary

Sandstone

Arenite

Conglomerate (Conglomerate (Sedimentary Rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary Rock)

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)

Banded Jasper (Mookaite / Chert) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Banded Jasper (Mookaite / Chert)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Weathered sandstone (probable arkosic sandstone) (Clastic sandstone, mainly quartz (SiO₂) with feldspar and iron-oxide cement) — sedimentary

Weathered sandstone (probable arkosic sandstone)

Clastic sandstone, mainly quartz (SiO₂) with feldspar and iron-oxide cement

Rounded brown pebble, likely weathered sandstone or iron-stained quartzite (Probable quartz-rich sandstone (SiO₂-dominated); exact identification requires testing) — sedimentary

Rounded brown pebble, likely weathered sandstone or iron-stained quartzite

Probable quartz-rich sandstone (SiO₂-dominated); exact identification requires testing

Fossil in Shale (Fossiliferous Shale) — sedimentary

Fossil in Shale

Fossiliferous Shale

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

Ironstone Concretion / Chert Nodules (Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)) — sedimentary

Ironstone Concretion / Chert Nodules

Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)

Agate (SiO2) — mineral

Agate

SiO2

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

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

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

Fossil gastropod shell (Fossilized gastropod (class Gastropoda); species cannot be determined from this view) — fossil

Fossil gastropod shell

Fossilized gastropod (class Gastropoda); species cannot be determined from this view

Red Claystone / Mudstone (Argillaceous sedimentary rock) — sedimentary

Red Claystone / Mudstone

Argillaceous sedimentary rock

Conglomerate (Conglomerate Sedimentary Rock) — sedimentary

Conglomerate

Conglomerate Sedimentary Rock

River Stone (Sandstone or Siltstone) (Sedimentary Rock (Clastic)) — sedimentary

River Stone (Sandstone or Siltstone)

Sedimentary Rock (Clastic)