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

Rounded river cobble, likely weathered sandstone or siltstone (Quartz-rich clastic sedimentary rock; exact identification requires a fresh surface and testing) — sedimentary

Rounded river cobble, likely weathered sandstone or siltstone

Quartz-rich clastic sedimentary rock; exact identification requires a fresh surface and testing

Weathered granitic rock (Granite or granodiorite; mainly quartz, feldspar, and mica/amphibole) — igneous

Weathered granitic rock

Granite or granodiorite; mainly quartz, feldspar, and mica/amphibole

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Crushed Limestone (Sedimentary Calcite/Dolomite Rock (CaCO3)) — sedimentary

Crushed Limestone

Sedimentary Calcite/Dolomite Rock (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Gravel / Limestone Fragment (Calcium Carbonate (CaCO3) / Fine-grained Sedimentary Rock) — sedimentary

Gravel / Limestone Fragment

Calcium Carbonate (CaCO3) / Fine-grained Sedimentary Rock

Banded gneiss pebble (Gneiss, chiefly quartz–feldspar–mica with dark biotite/amphibole bands) — metamorphic

Banded gneiss pebble

Gneiss, chiefly quartz–feldspar–mica with dark biotite/amphibole bands

Crushed Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Crushed Limestone

Calcium Carbonate (CaCO3)

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

Flint

SiO2 (Microcrystalline Quartz / Chert)

Sandstone (Siltstone or Fine-grained) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Siltstone or Fine-grained)

Clastic sedimentary rock (primarily SiO2)

Glauconite (Greensand) (Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2) — sedimentary

Glauconite (Greensand)

Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

Dalmatian Stone (Peralkaline rhyolite) — igneous

Dalmatian Stone

Peralkaline rhyolite

Shale (Shale (Lutite)) — sedimentary

Shale

Shale (Lutite)

Fossiliferous Limestone (Limestone with fossil bioclasts (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Limestone with fossil bioclasts (Calcium Carbonate, CaCO3)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (composed mostly of SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (composed mostly of SiO2)

Shale (Shale (composition varies: primarily clay minerals and quartz)) — sedimentary

Shale

Shale (composition varies: primarily clay minerals and quartz)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Sandstone with Iron Oxide (Arenite (SiO2 with Fe2O3 staining)) — sedimentary

Sandstone with Iron Oxide

Arenite (SiO2 with Fe2O3 staining)

Chert (Jasper variation) (Chert (Microcrystalline Silicon Dioxide, SiO2)) — sedimentary

Chert (Jasper variation)

Chert (Microcrystalline Silicon Dioxide, SiO2)

Sandstone (River Rock) (Arenite (SiO2 principal component)) — sedimentary

Sandstone (River Rock)

Arenite (SiO2 principal component)

Fossiliferous Limestone (Biogenic Calcium Carbonate (CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Calcium Carbonate (CaCO3)

Sandstone (Arenite (primarily Quartz Sandstone)) — sedimentary

Sandstone

Arenite (primarily Quartz Sandstone)

Sandstone (with Arkose characteristics) (Clastic sedimentary rock (SiO2 with KAlSi3O8)) — sedimentary

Sandstone (with Arkose characteristics)

Clastic sedimentary rock (SiO2 with KAlSi3O8)

Banded Iron Formation (BIF) / Iron Ore (Banded Iron Formation (composed primarily of Hematite (Fe2O3) and Magnetite (Fe3O4) with Quartz/Chert)) — sedimentary

Banded Iron Formation (BIF) / Iron Ore

Banded Iron Formation (composed primarily of Hematite (Fe2O3) and Magnetite (Fe3O4) with Quartz/Chert)

Limestone Fragment (Sedimentary rock (primarily Calcium Carbonate, CaCO3)) — sedimentary

Limestone Fragment

Sedimentary rock (primarily Calcium Carbonate, CaCO3)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Greywacke) (Sandstone (SiO2 enriched with lithic fragments)) — sedimentary

Sandstone (Greywacke)

Sandstone (SiO2 enriched with lithic fragments)

Celadonite in Basalt (Green Earth) (Celadonite (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2)) — mineral

Celadonite in Basalt (Green Earth)

Celadonite (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2)

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

Sandstone

Arenite (primarily Quartz-rich)

Sandstone (Ferruginous) (Arenite with iron oxide cement (Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with iron oxide cement (Fe2O3)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Limestone with Calcareous Accretion (Sedimentary Carbonate Rock (CaCO3)) — sedimentary

Limestone with Calcareous Accretion

Sedimentary Carbonate Rock (CaCO3)

Limestone with Calcite Veins (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Calcite Veins

Sedimentary Calcium Carbonate (CaCO3)

Sandstone (likely Arkosic) (Clastic Sedimentary Rock (Sandstone)) — sedimentary

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (Sandstone)

Sandstone (Ferruginous) (Clastic Sedimentary Rock (Litharenite)) — sedimentary

Sandstone (Ferruginous)

Clastic Sedimentary Rock (Litharenite)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Sandstone (Arenite (Siliclastic Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Siliclastic Sedimentary Rock)