Rock Identifier

Category

Sedimentary (Fossil)

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

Learn about Sedimentary (Fossil) in the encyclopedia

Fossil Opal

Fossiliferous Limestone

Fossiliferous Limestone

Bone Opal

Turritella Jasper

Turritella Agate

Turritella Agate

Amber

Petrified Wood

Diatomite

Guano

Conglomerate

Jet

Diatomaceous Earth

Conglomerate (Clastic Sedimentary (Conglomerate)) — sedimentary

Conglomerate

Clastic Sedimentary (Conglomerate)

Limestone Breccia (Sedimentary Breccia (Calcareous)) — sedimentary

Limestone Breccia

Sedimentary Breccia (Calcareous)

Siltstone or Mudstone (Argillaceous sedimentary rock) — sedimentary

Siltstone or Mudstone

Argillaceous sedimentary rock

Sandstone (Sedimentary Clastic Rock (Quartz-rich)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartz-rich)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Jasper (Mookaite / Brecciated Jasper) (Microcrystalline Quartz (SiO2 with iron oxide inclusions)) — sedimentary

Jasper (Mookaite / Brecciated Jasper)

Microcrystalline Quartz (SiO2 with iron oxide inclusions)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Red Jasper (Microcrystalline Quartz (SiO2 with Iron Oxide impurities)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2 with Iron Oxide impurities)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Botryoidal Pyrite (Iron Sulfide (FeS2)) — mineral

Botryoidal Pyrite

Iron Sulfide (FeS2)

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

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Tumbled sandstone pebble (Quartz-rich sandstone, commonly subarkose or arkose) — sedimentary

Tumbled sandstone pebble

Quartz-rich sandstone, commonly subarkose or arkose

Banded Ironstone / Jasper Siltstone (Siltstone with Iron Oxide Hydrates (SiO2 with Fe2O3/FeO(OH))) — sedimentary

Banded Ironstone / Jasper Siltstone

Siltstone with Iron Oxide Hydrates (SiO2 with Fe2O3/FeO(OH))

Quartz-veined Siltstone (Siltstone with Quartz (SiO2) veins) — sedimentary

Quartz-veined Siltstone

Siltstone with Quartz (SiO2) veins

Sandstone (Tumbled / Rounded) (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone (Tumbled / Rounded)

Sedimentary Rock (Quartz arenite)

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)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

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)

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

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay impurities

Pyrite (Iron Disulfide (FeS2)) — Mineral

Pyrite

Iron Disulfide (FeS2)

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)

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

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

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

Weathered Pyrite Nodule

Iron Sulfide (FeS2) undergoing oxidation to limonite/goethite

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

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

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)

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

Chert (Common Opal/Jasper variety)

Microcrystalline Quartz (SiO2) with hydration

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

Pyrite Nodules / Weathered Pyrite

Iron Sulfide (FeS2)

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

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

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

Argillite (with Barnacles)

Argillite (metamorphosed mudstone/shale)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock