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

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Red Jasper (with Chert/Quartz) (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper (with Chert/Quartz)

Silicon Dioxide (SiO2)

Jasper (likely Iron-stained) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (likely Iron-stained)

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and clay impurities) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay impurities

Orange Calcite (likely polished specimen) (Calcite) — Mineral

Orange Calcite (likely polished specimen)

Calcite

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Pyrite (Iron Disulfide (FeS2)) — Mineral

Pyrite

Iron Disulfide (FeS2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

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

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Weathered Pyrite Nodule (Iron Sulfide (FeS2) undergoing oxidation to limonite/goethite) — mineral

Weathered Pyrite Nodule

Iron Sulfide (FeS2) undergoing oxidation to limonite/goethite

Chert (Common Opal/Jasper variety) (Microcrystalline Quartz (SiO2) with hydration) — sedimentary

Chert (Common Opal/Jasper variety)

Microcrystalline Quartz (SiO2) with hydration

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Felsic gneiss, likely granitic gneiss (Quartz–feldspar–mica gneiss; commonly quartz + plagioclase/K-feldspar + biotite or hornblende) — metamorphic

Felsic gneiss, likely granitic gneiss

Quartz–feldspar–mica gneiss; commonly quartz + plagioclase/K-feldspar + biotite or hornblende

Banded Iron Formation (Banded Iron Formation (BIF)) — sedimentary

Banded Iron Formation

Banded Iron Formation (BIF)

Sandstone (Ferruginous) (Sandstone (primarily SiO2 with Iron Oxide cement)) — sedimentary

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with Iron Oxide cement)

Pyrite Nodules / Weathered Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite Nodules / Weathered Pyrite

Iron Sulfide (FeS2)

Banded sandstone pebble (Quartz-rich sandstone (predominantly quartz, with feldspar and iron-oxide cement)) — sedimentary

Banded sandstone pebble

Quartz-rich sandstone (predominantly quartz, with feldspar and iron-oxide cement)

Weathered quartz-bearing sandstone (Quartz arenite or feldspathic sandstone (tentative)) — sedimentary

Weathered quartz-bearing sandstone

Quartz arenite or feldspathic sandstone (tentative)

Green Sandstone Pebble (River/Beach Pebble) (Glauconitic Sandstone) — sedimentary

Green Sandstone Pebble (River/Beach Pebble)

Glauconitic Sandstone

Limestone with Chert (Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions) — sedimentary

Limestone with Chert

Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions

Fossilized Fish (Lepidotes) (Lepidotes sp. (Order: Lepisosteiformes)) — sedimentary

Fossilized Fish (Lepidotes)

Lepidotes sp. (Order: Lepisosteiformes)

Chalk / Sedimentary Limestone (Calcium Carbonate (CaCO3) - Biogenic Sedimentary Rock) — sedimentary

Chalk / Sedimentary Limestone

Calcium Carbonate (CaCO3) - Biogenic Sedimentary Rock

Sedimentary Pebble (Sandstone) (Clastic Sedimentary Rock (SiO2 dominant)) — sedimentary

Sedimentary Pebble (Sandstone)

Clastic Sedimentary Rock (SiO2 dominant)

Chalk (Sedimentary Limestone) (Calcium Carbonate (CaCO3) - Bioclastic Limestone) — sedimentary

Chalk (Sedimentary Limestone)

Calcium Carbonate (CaCO3) - Bioclastic Limestone

Bivalve Fossil (Bivalvia (Phylum Mollusca)) — Fossil

Bivalve Fossil

Bivalvia (Phylum Mollusca)

Argillite (with Barnacles) (Argillite (metamorphosed mudstone/shale)) — metamorphic

Argillite (with Barnacles)

Argillite (metamorphosed mudstone/shale)

Fossilized Limestone with Crinoid Stem (Carboniferous Limestone (containing Crinoidea ossicles)) — fossil

Fossilized Limestone with Crinoid Stem

Carboniferous Limestone (containing Crinoidea ossicles)

Worn River Pebble with Fossil Indentation (Sedimentary Rock with Fossil Infill) — sedimentary

Worn River Pebble with Fossil Indentation

Sedimentary Rock with Fossil Infill

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Sandstone (Clastic sedimentary rock) — sedimentary

Sandstone

Clastic sedimentary rock

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Sandstone / Quartzite (Sedimentary quartz arenite) — sedimentary

Sandstone / Quartzite

Sedimentary quartz arenite

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Sandstone (Arenite (Silicon Dioxide with various mineral cements)) — sedimentary

Sandstone

Arenite (Silicon Dioxide with various mineral cements)

Banded Slate Pebble (Metamorphosed Mudstone / Slate) — metamorphic

Banded Slate Pebble

Metamorphosed Mudstone / Slate

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Sandstone (Clastic sedimentary rock) — sedimentary

Sandstone

Clastic sedimentary rock

Argillite / Mudstone (Argillaceous sedimentary rock) — sedimentary

Argillite / Mudstone

Argillaceous sedimentary rock

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock