Rock Identifier

Category

Sedimentary Mineral

Browse sedimentary mineral specimens identified by the Rock Identifier community.

Learn about Sedimentary Mineral in the encyclopedia

Coal

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Glauconite

Breccia

Hutcheonite

Halite

Ironstone

Sperrylite

Baddeleyite

Anatase

Brookite

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

Unidentified light-colored rock or mineral specimen (Indeterminate; possibly weathered calcite-rich material, limestone, or pale quartz-bearing rock) — mineral

Unidentified light-colored rock or mineral specimen

Indeterminate; possibly weathered calcite-rich material, limestone, or pale quartz-bearing rock

Cleavable Calcite (Calcium Carbonate (CaCO3)) — mineral

Cleavable Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Optical Calcite (Calcium Carbonate (CaCO3)) — mineral

Optical Calcite

Calcium Carbonate (CaCO3)

Geode or Concretion (Silica-filled nodule (likely SiO2)) — sedimentary

Geode or Concretion

Silica-filled nodule (likely SiO2)

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

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

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

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Satin Spar (Selenite) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

Possible fossilized bone fragment (Indeterminate fossil bone; no species can be identified from this image) — fossil

Possible fossilized bone fragment

Indeterminate fossil bone; no species can be identified from this image

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Magnetite Ore (Magnetite (Fe3O4)) — mineral

Magnetite Ore

Magnetite (Fe3O4)

Quartz Geode (Silicon dioxide (SiO2)) — mineral

Quartz Geode

Silicon dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Common Pebble / Sedimentary Rock Fragment (Lithified clastic sediment) — sedimentary

Common Pebble / Sedimentary Rock Fragment

Lithified clastic sediment

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Dark mineral nodule with white veining (Possibly a calcite-veined manganese- or iron-rich concretion; exact identification requires testing) — mineral

Dark mineral nodule with white veining

Possibly a calcite-veined manganese- or iron-rich concretion; exact identification requires testing

Weathered iron-rich sandstone or siltstone (Clastic siliciclastic sedimentary rock, likely ferruginous sandstone/siltstone (quartz-rich, Fe-oxide cement)) — sedimentary

Weathered iron-rich sandstone or siltstone

Clastic siliciclastic sedimentary rock, likely ferruginous sandstone/siltstone (quartz-rich, Fe-oxide cement)

Limonite / Ironstone (Hydrated Iron Oxide (FeO(OH)·nH2O)) — mineral

Limonite / Ironstone

Hydrated Iron Oxide (FeO(OH)·nH2O)

Banded Metamorphic Rock (Gneiss or Schist) — metamorphic

Banded Metamorphic Rock

Gneiss or Schist

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Shark Tooth Fossil (Carcharocles megalodon or similar extinct shark tooth) — fossil

Shark Tooth Fossil

Carcharocles megalodon or similar extinct shark tooth

Sandstone (Quartz Arenite / Clastic Sedimentary Rock) — sedimentary

Sandstone

Quartz Arenite / Clastic Sedimentary Rock

Fossil gastropod shell (Gastropoda; species cannot be determined from the image) — fossil

Fossil gastropod shell

Gastropoda; species cannot be determined from the image

Sandstone (Sandstone (SiO2 dominated)) — sedimentary

Sandstone

Sandstone (SiO2 dominated)

Iron-rich sandstone or laterite pebble (Ferruginous sandstone; chiefly quartz (SiO₂) cemented by iron oxides such as hematite/goethite) — sedimentary

Iron-rich sandstone or laterite pebble

Ferruginous sandstone; chiefly quartz (SiO₂) cemented by iron oxides such as hematite/goethite

Fossil Snail (Gastropoda (fossilized)) — fossil

Fossil Snail

Gastropoda (fossilized)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Milky quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Weathered quartz-rich pebble (Likely quartz aggregate, SiO₂, possibly quartzite or silicified rock) — mineral

Weathered quartz-rich pebble

Likely quartz aggregate, SiO₂, possibly quartzite or silicified rock

River Pebble (Quartzite / Weathered Sedimentary Rock) — sedimentary

River Pebble

Quartzite / Weathered Sedimentary Rock

Stream-Rounded Shale or Mudstone (Argillaceous sedimentary rock) — sedimentary

Stream-Rounded Shale or Mudstone

Argillaceous sedimentary rock

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock