Rock Identifier

Category

Sedimentary (Biogenic Sediment Or Biological Remain)

Browse sedimentary (biogenic sediment or biological remain) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Biogenic Sediment Or Biological Remain) in the encyclopedia

Sapropel

Claystone

Phosphorite

Diatomite

Turbidite

Quartzite Sandstone

Quartzite Sandstone

Conglomerate

Ironstone

Breccia

Tripolite

Bituminous Shale

Bituminous Shale

Kambaba Jasper

Fossiliferous Limestone (Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

Limestone (containing Fossil Mold) (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone (containing Fossil Mold)

Sedimentary Calcium Carbonate (CaCO3)

Chert (and Quartzite) (Microcrystalline silica (SiO2)) — sedimentary

Chert (and Quartzite)

Microcrystalline silica (SiO2)

Banded Chert (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert

Silicon Dioxide (SiO2)

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

Breccia (Breccia (Clastic Sedimentary Rock)) — sedimentary

Breccia

Breccia (Clastic Sedimentary Rock)

Boxwork Siderite or Sepatarian Nodule Weathering (Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment) — sedimentary

Boxwork Siderite or Sepatarian Nodule Weathering

Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment

Chert (Nodule) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Limestone (Elephant Skin or Karst-weathered) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Elephant Skin or Karst-weathered)

Calcium Carbonate (CaCO3)

Coquina (Biogenic calcarenite / Coquina (CaCO3)) — sedimentary

Coquina

Biogenic calcarenite / Coquina (CaCO3)

Coquina (Coquina (Biogenic Limestone / CaCO3)) — sedimentary

Coquina

Coquina (Biogenic Limestone / CaCO3)

Coquina (Biogenic Limestone (Calcitic shells)) — sedimentary

Coquina

Biogenic Limestone (Calcitic shells)

Coquina (Biogenic Limestone (Calcite, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcite, CaCO3)

Coquina (Biogenic Limestone (Calcite/Aragonite)) — sedimentary

Coquina

Biogenic Limestone (Calcite/Aragonite)

Chalcedony (Agate/Seashell replacement) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Chalcedony (Agate/Seashell replacement)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (with Iron Staining) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Iron Staining)

Microcrystalline Quartz (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Quartz Geode (Silicon Dioxide (SiO2) in Geodic habit) — mineral

Quartz Geode

Silicon Dioxide (SiO2) in Geodic habit

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

Chert (often called Flint or River Pebble)

Microcrystalline Quartz (SiO2)

Amber (Rough) (Succinite (Resinite)) — gemstone

Amber (Rough)

Succinite (Resinite)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Fossiliferous Sandstone (Sedimentary rock containing invertebrate fossils) — fossil

Fossiliferous Sandstone

Sedimentary rock containing invertebrate fossils

Quartz (Grain/Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Grain/Fragment)

Silicon Dioxide (SiO2)

Fossilized Gastropod Shell (Class Gastropoda (Fossil)) — sedimentary

Fossilized Gastropod Shell

Class Gastropoda (Fossil)

Expanded Clay Pebble (Lightweight Expanded Clay Aggregate (LECA)) — sedimentary

Expanded Clay Pebble

Lightweight Expanded Clay Aggregate (LECA)

Pyrite-bearing Rock (Iron Sulfide (FeS2)) — mineral

Pyrite-bearing Rock

Iron Sulfide (FeS2)

Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Calcite

Calcite (Calcium Carbonate, CaCO3)

Ironstone Nodule / Limonite Concretion (Iron-rich sedimentary concretion (FeO(OH)·nH2O / Fe2O3)) — sedimentary

Ironstone Nodule / Limonite Concretion

Iron-rich sedimentary concretion (FeO(OH)·nH2O / Fe2O3)

Chert (Pink/Red variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Pink/Red variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

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

Chert (Black Flint)

Microcrystalline Quartz (SiO2)

Calcite in Matrix (Calcium Carbonate (CaCO3)) — mineral

Calcite in Matrix

Calcium Carbonate (CaCO3)

Weathered fossiliferous limestone or fossil fragment (Indeterminate bioclastic carbonate rock; likely calcite (CaCO₃) with fossil shell material) — fossil

Weathered fossiliferous limestone or fossil fragment

Indeterminate bioclastic carbonate rock; likely calcite (CaCO₃) with fossil shell material

Fossilized Fish Skeleton in Matrix (Vertebrata (Class: Actinopterygii), typically found in limestone or shale matrices) — sedimentary

Fossilized Fish Skeleton in Matrix

Vertebrata (Class: Actinopterygii), typically found in limestone or shale matrices

Limestone with Fossil Impression (Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Fossil Impression

Calcium Carbonate (CaCO3)

Coquina / Fossiliferous Limestone (Fossiliferous Calcarenite (Calcium carbonate, CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Fossiliferous Calcarenite (Calcium carbonate, CaCO3)

Limestone with Fossil inclusions (Fossiliferous Limestone (CaCO3)) — sedimentary

Limestone with Fossil inclusions

Fossiliferous Limestone (CaCO3)

Coquina or Coral Fossil (Biogenic Limestone (Calcite/Aragonite)) — sedimentary

Coquina or Coral Fossil

Biogenic Limestone (Calcite/Aragonite)

Coquina (Biogenic Limestone (Calcite, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcite, CaCO3)

Coquina (Biogenic Limestone (Calcite, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcite, CaCO3)

Coquina (Biogenic Limestone (Calcite / CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcite / CaCO3)

Fossiliferous Limestone (or Bryozoan/Coral Fossil Pebble) (Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (or Bryozoan/Coral Fossil Pebble)

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)