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

River Rock (likely Siltstone or fine-grained Sandstone) (Clastic Sedimentary Rock) — sedimentary

River Rock (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock

Conglomerate (Clastic sedimentary conglomerate) — sedimentary

Conglomerate

Clastic sedimentary conglomerate

Shale (possibly Carbonaceous or Oil Shale) (Argillaceous Sedimentary Rock) — sedimentary

Shale (possibly Carbonaceous or Oil Shale)

Argillaceous Sedimentary Rock

Shale (Argillaceous sedimentary rock) — sedimentary

Shale

Argillaceous sedimentary rock

Shale (Lutaceous Sedimentary Rock) — sedimentary

Shale

Lutaceous Sedimentary Rock

Sandstone Pebble (Quartz Sandstone) — sedimentary

Sandstone Pebble

Quartz Sandstone

Red Sandstone (Quartz Arenite (iron-stained)) — sedimentary

Red Sandstone

Quartz Arenite (iron-stained)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Magnetite / Ironstone (Magnetite (Fe3O4)) — mineral

Magnetite / Ironstone

Magnetite (Fe3O4)

Pyrite-bearing sulfide specimen (Pyrite (FeS₂), possibly mixed with chalcopyrite or other iron sulfides) — mineral

Pyrite-bearing sulfide specimen

Pyrite (FeS₂), possibly mixed with chalcopyrite or other iron sulfides

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

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Red Jasper (Quartz) (Silicon Dioxide (SiO2) with Iron impurities) — sedimentary

Red Jasper (Quartz)

Silicon Dioxide (SiO2) with Iron impurities

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Banded sedimentary rock (likely sandstone or siltstone) (Layered siliciclastic sedimentary rock; exact identification is not possible from the image alone) — sedimentary

Banded sedimentary rock (likely sandstone or siltstone)

Layered siliciclastic sedimentary rock; exact identification is not possible from the image alone

Pebble (likely Quartz or Chert) (SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.) — Sedimentary Rock

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Sedimentary Rock

Fossiliferous Limestone (Biogenic Sedimentary Rock (CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (CaCO3)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Sandstone (with Iron Oxide) (Quartz Arenite / Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Sandstone (with Iron Oxide)

Quartz Arenite / Ferruginous Sandstone (SiO2 with Fe2O3)

Sandstone (Common Quartz Pebble/Rock) (Sedimentary rock / Quartz arenite) — sedimentary

Sandstone (Common Quartz Pebble/Rock)

Sedimentary rock / Quartz arenite

Sandstone (Pebble) (Sandstone) — sedimentary

Sandstone (Pebble)

Sandstone

Limestone (Calcite-rich carbonate rock (primarily CaCO₃)) — sedimentary

Limestone

Calcite-rich carbonate rock (primarily CaCO₃)

Chert (specifically Gray/Blue-Gray Chert) (Chert (SiO2)) — sedimentary

Chert (specifically Gray/Blue-Gray Chert)

Chert (SiO2)

Weathered sedimentary rock, likely fine-grained sandstone or siltstone (Quartz-rich sandstone/siltstone; exact identification requires close examination) — sedimentary

Weathered sedimentary rock, likely fine-grained sandstone or siltstone

Quartz-rich sandstone/siltstone; exact identification requires close examination

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Blue calcite (probable) (Calcite, calcium carbonate (CaCO₃)) — mineral

Blue calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Rough amber-like brown mineral specimen (Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber) — mineral

Rough amber-like brown mineral specimen

Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Yellow Jasper (Silicon dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon dioxide (SiO2)

Geode (Unopened) (Silica-rich concretion (SiO2)) — sedimentary

Geode (Unopened)

Silica-rich concretion (SiO2)

Jasper and Ironstone (likely Jasperized Ironstone) (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)) — sedimentary

Jasper and Ironstone (likely Jasperized Ironstone)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Moqui Marble (Concretion) (Iron Oxide Concretion (Hematite-cemented Sandstone)) — sedimentary

Moqui Marble (Concretion)

Iron Oxide Concretion (Hematite-cemented Sandstone)

Common Opal / Chert (Hydrated silica (SiO2·nH2O) or Microcrystalline Quartz (SiO2)) — mineral

Common Opal / Chert

Hydrated silica (SiO2·nH2O) or Microcrystalline Quartz (SiO2)

Sandstone (Quartzite-rich Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcite (CaCO3)) — sedimentary

Limestone

Calcite (CaCO3)

Tumbled jasper (likely picture/brecciated jasper) (Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides) — mineral

Tumbled jasper (likely picture/brecciated jasper)

Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides

Sandstone (Red Arkose) (Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)) — sedimentary

Sandstone (Red Arkose)

Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)