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

Sandstone pebble (Sandstone (mainly Quartz, SiO2)) — sedimentary

Sandstone pebble

Sandstone (mainly Quartz, SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Gastropod Fossil (Gastropoda) — fossil

Gastropod Fossil

Gastropoda

Conglomerate (Lithified, poorly sorted gravel; composition is uncertain from the image) — sedimentary

Conglomerate

Lithified, poorly sorted gravel; composition is uncertain from the image

Weathered Sedimentary Rock (Sedimentary Rock) — Sedimentary

Weathered Sedimentary Rock

Sedimentary Rock

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Slate (Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz) — metamorphic

Slate

Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz

Spirifer Brachiopod Fossil (Phylum Brachiopoda, Order Spiriferida) — fossil

Spirifer Brachiopod Fossil

Phylum Brachiopoda, Order Spiriferida

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Concrete Fragment (Hardened Portland Cement Composite) — Anthropogenic (Man-made material mimicking sedimentary rock)

Concrete Fragment

Hardened Portland Cement Composite

Anthropogenic (Man-made material mimicking sedimentary rock)

Fossil Assortment and Geological Specimens (Various (including Ammonoidea)) — fossil

Fossil Assortment and Geological Specimens

Various (including Ammonoidea)

Sandstone or Mudstone (Sedimentary Rock) — sedimentary

Sandstone or Mudstone

Sedimentary Rock

Sandstone (with man-made markings) (Arenite (composed primarily of Quartz, SiO2)) — sedimentary

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Sandstone (Clastic sedimentary rock (primarily quartz arenite)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily quartz arenite)

Cone-in-cone structure (Limestone) (Cone-in-cone structure (Secondary Sedimentary Structure)) — sedimentary

Cone-in-cone structure (Limestone)

Cone-in-cone structure (Secondary Sedimentary Structure)

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

Banded Sedimentary Rock

Sedimentary rock with Liesegang banding

Magnetite or Ironstone Nodule (Magnetite (Fe3O4) or Hematite-rich Sedimentary Nodule) — mineral

Magnetite or Ironstone Nodule

Magnetite (Fe3O4) or Hematite-rich Sedimentary Nodule

Shale / Mudstone (Laminated Mudrock (Siliciclastic Sedimentary Rock)) — sedimentary

Shale / Mudstone

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Shale (Beach-worn) (Laminated Pelite (primarily clay minerals and quartz)) — sedimentary

Shale (Beach-worn)

Laminated Pelite (primarily clay minerals and quartz)

Sandstone (Quartz-rich) (Arenite (SiO2)) — sedimentary

Sandstone (Quartz-rich)

Arenite (SiO2)

Bivalve Shell Fragment (Biogenic Calcite/Aragonite) (Calcium carbonate (CaCO3, primarily aragonite/calcite)) — sedimentary

Bivalve Shell Fragment (Biogenic Calcite/Aragonite)

Calcium carbonate (CaCO3, primarily aragonite/calcite)

Chert Breccia (Brecciated Chert (Microcrystalline Silica)) — sedimentary

Chert Breccia

Brecciated Chert (Microcrystalline Silica)

Quartz Sand Grain (Silicon dioxide (SiO2)) — mineral

Quartz Sand Grain

Silicon dioxide (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Conglomerate (Quartz Pebble Conglomerate) (Quartz Pebble Conglomerate) — sedimentary

Conglomerate (Quartz Pebble Conglomerate)

Quartz Pebble Conglomerate

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

Fossil oyster shell

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

Breccia (Sedimentary Breccia) — sedimentary

Breccia

Sedimentary Breccia

Breccia (Sedimentary Breccia) — sedimentary

Breccia

Sedimentary Breccia

Sandstone (Sedimentary Rock) — sedimentary

Sandstone

Sedimentary Rock

Sandstone (Sedimentary Rock) — sedimentary

Sandstone

Sedimentary Rock

River Rock (Sedimentary clast) — sedimentary

River Rock

Sedimentary clast

Conglomerate (Sedimentary Conglomerate) — sedimentary

Conglomerate

Sedimentary Conglomerate

Conglomerate (Sedimentary Conglomerate) — sedimentary

Conglomerate

Sedimentary Conglomerate

Sedimentary Pebble (Sedimentary Rock Fragment) — sedimentary

Sedimentary Pebble

Sedimentary Rock Fragment

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

Sandstone (Ferruginous)

Clastic sedimentary rock (SiO2 with Fe2O3)

Mudstone (Lutylite (group of fine-grained sedimentary rocks)) — sedimentary

Mudstone

Lutylite (group of fine-grained sedimentary rocks)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Fossil scallop shell (Scallop (family Pectinidae); shell composed chiefly of calcite and/or aragonite (CaCO₃)) — fossil

Fossil scallop shell

Scallop (family Pectinidae); shell composed chiefly of calcite and/or aragonite (CaCO₃)

Quartz Vein in Limestone (Calcium carbonate with silicon dioxide (SiO2 in CaCO3)) — sedimentary

Quartz Vein in Limestone

Calcium carbonate with silicon dioxide (SiO2 in CaCO3)

Ironstone (iron-rich sandstone or concretion) (Ferruginous sandstone, cemented by iron oxides/hydroxides such as hematite (Fe₂O₃) and goethite (FeO(OH))) — sedimentary

Ironstone (iron-rich sandstone or concretion)

Ferruginous sandstone, cemented by iron oxides/hydroxides such as hematite (Fe₂O₃) and goethite (FeO(OH))

Fossilized Brachiopod in Matrix (Phylum Brachiopoda) — fossil

Fossilized Brachiopod in Matrix

Phylum Brachiopoda