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

Fossiliferous Limestone (or Bryozoan/Coral Fossil Pebble) (Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (or Bryozoan/Coral Fossil Pebble)

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

Carnelian Agate (Chalcedony (SiO2)) — mineral

Carnelian Agate

Chalcedony (SiO2)

Sandstone Pebble (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

Sandstone Pebble (Sedimentary Rock (Quartz Arenite)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartz Arenite)

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

Chert (Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

Limonite (Iron Stone Concretion) (Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O) — mineral

Limonite (Iron Stone Concretion)

Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O

Fossil Brachiopod or Mollusk Cast (Phylum Brachiopoda / Mollusca internal mold) — fossil

Fossil Brachiopod or Mollusk Cast

Phylum Brachiopoda / Mollusca internal mold

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Chert (Chert (Microcrystalline Quartz)) — sedimentary

Chert

Chert (Microcrystalline Quartz)

Conglomerate (Clast-supported polymict conglomerate) — sedimentary

Conglomerate

Clast-supported polymict conglomerate

Raw selenite (gypsum) (Gypsum, CaSO₄·2H₂O; translucent variety selenite) — mineral

Raw selenite (gypsum)

Gypsum, CaSO₄·2H₂O; translucent variety selenite

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Variety: Agate / Chalcedony) (Silicon Dioxide (SiO2)) — sedimentary

Quartz (Variety: Agate / Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

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

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Tumbled brecciated jasper (Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions) — mineral

Tumbled brecciated jasper

Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions

Tumbled quartz-rich pebble (Microcrystalline quartz (SiO₂), possibly weathered chert or chalcedony) — mineral

Tumbled quartz-rich pebble

Microcrystalline quartz (SiO₂), possibly weathered chert or chalcedony

Red Jasper (Silicon Dioxide (SiO2 with Hematite inclusions)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2 with Hematite inclusions)

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite or Limonite inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Quartz (Chert/Chalcedony variety) (Silicon Dioxide (SiO2)) — sedimentary

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

Red Jasper (Chalcedony (SiO2) with iron inclusions) — sedimentary

Red Jasper

Chalcedony (SiO2) with iron inclusions

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Red Jasper (Tumbled) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary/mineral

Red Jasper (Tumbled)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary/mineral

Quartz Geode (Silicon Dioxide (SiO2) within a geode) — mineral

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Red Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with iron impurities) — mineral

Yellow Jasper

Silicon Dioxide (SiO2) with iron impurities

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Septarian Nodule (Dragon Stone) (Septarian Concretion (Calcite, Aragonite, and Limestone/Clay)) — sedimentary

Septarian Nodule (Dragon Stone)

Septarian Concretion (Calcite, Aragonite, and Limestone/Clay)

Banded Iron Formation (BIF) / Jaspilite (Banded Iron Formation (predominantly Hematite, Magnetite, and Quartz/Jasper)) — sedimentary

Banded Iron Formation (BIF) / Jaspilite

Banded Iron Formation (predominantly Hematite, Magnetite, and Quartz/Jasper)

Gastropod Fossil (Internal Mold) (Phylum Mollusca, Class Gastropoda (Steinkern)) — sedimentary

Gastropod Fossil (Internal Mold)

Phylum Mollusca, Class Gastropoda (Steinkern)

Travertine (Calcium Carbonate (CaCO3)) — sedimentary

Travertine

Calcium Carbonate (CaCO3)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Bivalve Fossil (Shell-bearing Sedimentary Rock) (Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix) — fossil

Bivalve Fossil (Shell-bearing Sedimentary Rock)

Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix

Petrified Wood (Silicified Wood) — fossil

Petrified Wood

Silicified Wood

Coal (Bituminous or sub-bituminous coal (carbonaceous rock)) — sedimentary

Coal

Bituminous or sub-bituminous coal (carbonaceous rock)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Starfish Fossil (Asteroidea fossil) — fossil

Starfish Fossil

Asteroidea fossil

Sandstone (Arenite) — sedimentary

Sandstone

Arenite