Rock Identifier

Category

Sedimentary

Browse sedimentary specimens identified by the Rock Identifier community.

Learn about Sedimentary in the encyclopedia

Argillite

Arkose

Banded Iron Formation

Banded Iron Formation

Bauxite

Bituminous Coal

Bituminous Coal

Bituminous Shale

Bituminous Shale

Black Shale

Bog Iron

Breccia

Brecciated Jasper

Brecciated Jasper

Bumblebee Jasper

Bumblebee Jasper

Calcarenite

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite/Iron inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions

Siltstone with Iron Staining (Siltstone (primarily SiO2 with Fe2O3 staining)) — sedimentary

Siltstone with Iron Staining

Siltstone (primarily SiO2 with Fe2O3 staining)

Chert (Jasper type) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper type)

Microcrystalline Quartz (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Jasper (Silicon dioxide (SiO2) with iron oxide impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron oxide impurities

Petrified Wood (Silicified wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified wood (primarily SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Chert (River Cobble) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (River Cobble)

Chert (Cryptocrystalline Quartz, SiO2)

Banded Chert or Agate (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert or Agate

Silicon Dioxide (SiO2)

Jasper (Silicon dioxide (SiO2) with iron impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron impurities

Chert (varietal: Jasper or Flint) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (varietal: Jasper or Flint)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Septarian Nodule (Dragon Stone) (Septarian concretion (primarily Calcite, Aragonite, and Limestone/Claystone mixture)) — sedimentary

Septarian Nodule (Dragon Stone)

Septarian concretion (primarily Calcite, Aragonite, and Limestone/Claystone mixture)

Conglomerate (Conglomerate) — sedimentary

Conglomerate

Conglomerate

Chert (including Common Opal and Chalcedony) (Silicon Dioxide (SiO2 · nH2O)) — sedimentary

Chert (including Common Opal and Chalcedony)

Silicon Dioxide (SiO2 · nH2O)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Chert (specifically Flint or Jasper variant) (Microcrystalline silica (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline silica (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Chert (Iron-stained) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ironstone (with Limonite/Goethite) (Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)) — sedimentary

Ironstone (with Limonite/Goethite)

Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)

Red Sandstone (Arenite (with Iron Oxide / Hematite cementation)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Banded Chert (Agate-like Flint) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Banded Chert (Agate-like Flint)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (specifically Yellow Jasper/Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert / Jasper / Agate (Chalcedony Group) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Jasper / Agate (Chalcedony Group)

Microcrystalline Quartz (SiO2)

Chert (Iron-stained) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Iron-stained)

Silicon Dioxide (SiO2)

Chert (often called Jasper or Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (often called Jasper or Flint)

Microcrystalline Quartz (SiO2)

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Sandstone (Arenite (primarily SiO2, silica)) — sedimentary

Sandstone

Arenite (primarily SiO2, silica)

Siltstone (Siltstone (primarily composed of SiO2)) — sedimentary

Siltstone

Siltstone (primarily composed of SiO2)

Sandstone (with vugs or solution cavities) (Arenite (primarily Quartz and Feldspar with CaCO3 or SiO2 cement)) — sedimentary

Sandstone (with vugs or solution cavities)

Arenite (primarily Quartz and Feldspar with CaCO3 or SiO2 cement)

Ferruginous Sandstone (Ironstone) (Sandstone with Hematite/Goethite cement (SiO2 + FeO(OH))) — sedimentary

Ferruginous Sandstone (Ironstone)

Sandstone with Hematite/Goethite cement (SiO2 + FeO(OH))

Chert Breccia (Microcrystalline Quartz (SiO2) Breccia) — sedimentary

Chert Breccia

Microcrystalline Quartz (SiO2) Breccia

Chert (and/or River Pebble) (Microcrystalline silica (SiO2)) — sedimentary

Chert (and/or River Pebble)

Microcrystalline silica (SiO2)

Ferruginous Chert (Silicon dioxide with iron oxide impurities (SiO2 + Fe2O3)) — sedimentary

Ferruginous Chert

Silicon dioxide with iron oxide impurities (SiO2 + Fe2O3)

Chert (or Flint) (Chert (microcrystalline or cryptocrystalline quartz, SiO2)) — Sedimentary

Chert (or Flint)

Chert (microcrystalline or cryptocrystalline quartz, SiO2)

Fossiliferous Limestone (Fossiliferous Limestone (CaCO3 with organic inclusions)) — fossil

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3 with organic inclusions)

Petrified Wood (Silicified wood (Quartz/Chalcedony replacement of organic matter)) — fossil

Petrified Wood

Silicified wood (Quartz/Chalcedony replacement of organic matter)

Petrified Wood (Silicified Wood (primarily Chalcedony/Quartz, SiO2)) — fossil

Petrified Wood

Silicified Wood (primarily Chalcedony/Quartz, SiO2)

Fossilized Shark Tooth (Sand Tiger) (Carcharias sp. (Fossilized Tooth)) — fossil

Fossilized Shark Tooth (Sand Tiger)

Carcharias sp. (Fossilized Tooth)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Fossilized Bone (Vertebrate Fossil Fragment (Calcium Phosphate / Hydroxyapatite)) — fossil

Fossilized Bone

Vertebrate Fossil Fragment (Calcium Phosphate / Hydroxyapatite)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)