Rock Identifier

Category

Sedimentary (Anthropogenic)

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

Ferruginous Sandstone (Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)) — sedimentary

Ferruginous Sandstone

Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)

Fossil Coral (Favosites) (Favosites (Order: Tabulata, Phylum: Cnidaria)) — sedimentary

Fossil Coral (Favosites)

Favosites (Order: Tabulata, Phylum: Cnidaria)

Jasper or Agate-bearing Chert (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Jasper or Agate-bearing Chert

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Jasper with Quartz Veining (Silicon Dioxide (SiO2) with impurities such as Fe2O3) — sedimentary

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with impurities such as Fe2O3

Chert (Limestone-based) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Limestone-based)

Silicon Dioxide (SiO2)

Dalmatian Jasper / Dalmatian Stone (Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)) — igneous

Dalmatian Jasper / Dalmatian Stone

Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)

Dalmation Stone (Dalmation Jasper) (Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)) — igneous

Dalmation Stone (Dalmation Jasper)

Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)

Dalmatian Stone (Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)) — igneous

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Chert (specifically Jasper or Flint type) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Flint type)

Microcrystalline Quartz (SiO2)

Sandstone (with Limonite staining) (Arenite (FeOx-rich)) — sedimentary

Sandstone (with Limonite staining)

Arenite (FeOx-rich)

Sandstone (Arenite (primarily SiO2 with various cementing agents)) — sedimentary

Sandstone

Arenite (primarily SiO2 with various cementing agents)

Sandstone (likely Graywacke or Lithic Sandstone) (Arenite / Wacke (SiO2 based with lithic fragments)) — sedimentary

Sandstone (likely Graywacke or Lithic Sandstone)

Arenite / Wacke (SiO2 based with lithic fragments)

Sandstone (Quartzose) (Arenite (SiO2 principal)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2 principal)

Sandstone (Quartzite-rich Pebble) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzite-rich Pebble)

Arenite (composed primarily of SiO2)

Red Sandstone (Iron-Rich) (Arenite (Fe2O3)) — sedimentary

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Sandstone (Ferruginous) (Arenite (Fe-rich SiO2)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Shale with Plant Fossils / Carbonaceous Shale (Laminated Mudrock (Siliciclastic)) — sedimentary

Shale with Plant Fossils / Carbonaceous Shale

Laminated Mudrock (Siliciclastic)

Limestone (CaCO3 (principally composed of Calcite)) — sedimentary

Limestone

CaCO3 (principally composed of Calcite)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Micaceous) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Sandstone (River Cobble) (Arenite) — sedimentary

Sandstone (River Cobble)

Arenite

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone with Bedding Planes (Arenite (Sedimentary rock composed primarily of sand-sized minerals)) — sedimentary

Sandstone with Bedding Planes

Arenite (Sedimentary rock composed primarily of sand-sized minerals)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)

Shale (Mudstone/Shale) — sedimentary

Shale

Mudstone/Shale

Ironstone with Pyrite (Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)) — sedimentary

Ironstone with Pyrite

Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)

Conglomerate (Clastic Conglomerate (Lithic-rich)) — sedimentary

Conglomerate

Clastic Conglomerate (Lithic-rich)

Petrified Wood (Silicified Wood (SiO2 - Silicon Dioxide)) — sedimentary

Petrified Wood

Silicified Wood (SiO2 - Silicon Dioxide)

Ferruginous Sandstone (Ironstone) (Ferruginous Sandstone / Limonite-cemented Quartz Sandstone) — sedimentary

Ferruginous Sandstone (Ironstone)

Ferruginous Sandstone / Limonite-cemented Quartz Sandstone

Ironstone Concretion (Limonite/Goethite) (Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion (Limonite/Goethite)

Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)

Chert (Jasper/Flint variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

Fossiliferous Brachiopod in Shale (Brachiopoda (Phylum) preserved in Carbonaceous Shale) — sedimentary

Fossiliferous Brachiopod in Shale

Brachiopoda (Phylum) preserved in Carbonaceous Shale

Druzy Quartz (part of a Geode) (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz (part of a Geode)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)