Rock Identifier

Category

Sedimentary (Biogenic)

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

Learn about Sedimentary (Biogenic) in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Diatomite

Coal

Kambaba Jasper

Limestone

Asphalt Rock

Claystone

Mudstone

Sapropel

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

Coquina

Biogenic Limestone (Calcite/Aragonite)

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with marine fossils) — fossil

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with marine fossils

Fossiliferous Limestone (Biogenic Sedimentary Rock (Calcite, CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcite, CaCO3)

Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert

Cryptocrystalline Quartz (SiO2)

Seashell (Cockle Shell) (Cardiidae (Bivalvia), primary composition: Calcium Carbonate (CaCO3) in the form of aragonite or calcite) — fossil

Seashell (Cockle Shell)

Cardiidae (Bivalvia), primary composition: Calcium Carbonate (CaCO3) in the form of aragonite or calcite

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

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Oyster Shell Fragment (Crassostrea virginica (or related Bivalvia)) — fossil

Oyster Shell Fragment

Crassostrea virginica (or related Bivalvia)

Chert (or Fossiliferous Limestone) (Microcrystalline Quartz (SiO2) / Calcium Carbonate (CaCO3)) — sedimentary

Chert (or Fossiliferous Limestone)

Microcrystalline Quartz (SiO2) / Calcium Carbonate (CaCO3)

Fossiliferous Limestone containing a Brachiopod or Mollusk Impression (Biogenic Sedimentary Rock / Fossiliferous Limestone) — sedimentary

Fossiliferous Limestone containing a Brachiopod or Mollusk Impression

Biogenic Sedimentary Rock / Fossiliferous Limestone

Fossiliferous Limestone (Biogenic Sedimentary Rock (primarily CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (primarily CaCO3)

Coal (Bituminous or Anthracite) (Organogenic Sedimentary Rock (Carbon)) — sedimentary

Coal (Bituminous or Anthracite)

Organogenic Sedimentary Rock (Carbon)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

Chert / Jasper Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Jasper Pebble

Microcrystalline Quartz (SiO2)

Chert (Silicon dioxide (SiO2)) — sedimentary

Chert

Silicon dioxide (SiO2)

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with Biogenic Inclusions) — sedimentary

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Biogenic Inclusions

Chert (and Fossiliferous Limestone) (Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)) — sedimentary

Chert (and Fossiliferous Limestone)

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Fossiliferous Limestone (Fossiliferous Calcite (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Calcite (CaCO3)

Coquina (Fossiliferous Limestone) (Biogenic Limestone (mostly CaCO3 / Calcium Carbonate)) — sedimentary

Coquina (Fossiliferous Limestone)

Biogenic Limestone (mostly CaCO3 / Calcium Carbonate)

Chert (Flint / Agate Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint / Agate Nodule)

Silicon Dioxide (SiO2)

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

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

Chert (or Petrifed Wood / Banded Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (or Petrifed Wood / Banded Flint)

Silicon Dioxide (SiO2)

Fossiliferous Limestone (Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Limestone (Calcium Carbonate, CaCO3)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Flint / Jasper)

Microcrystalline Quartz (SiO2)

Chert (Nodule) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Fossiliferous Limestone (Coquina) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (Coquina)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone Pebble (Calcium Carbonate (CaCO3) with Biogenic Inclusions) — sedimentary

Fossiliferous Limestone Pebble

Calcium Carbonate (CaCO3) with Biogenic Inclusions

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

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossilized Shell in Limestone (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossilized Shell in Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

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

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Coquina (Biogenic Limestone (Calcium Carbonate - CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcium Carbonate - CaCO3)

Stromatolite (Biogenic Sedimentary Rock (composed predominantly of CaCO3)) — sedimentary

Stromatolite

Biogenic Sedimentary Rock (composed predominantly of CaCO3)

Chalky limestone (Micritic limestone, predominantly calcite (CaCO₃)) — sedimentary

Chalky limestone

Micritic limestone, predominantly calcite (CaCO₃)

Pearl (Pearl (Calcium Carbonate with organic conchiolin, CaCO3)) — mineral

Pearl

Pearl (Calcium Carbonate with organic conchiolin, CaCO3)

Fossiliferous Limestone (Carbonate sedimentary rock with trace fossils (CaCO3)) — sedimentary

Fossiliferous Limestone

Carbonate sedimentary rock with trace fossils (CaCO3)

Fossiliferous Limestone (Bioclastic Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Bioclastic Limestone (CaCO3)

Fossil Shell in Sedimentary Matrix (Bivalvia (fossil) in Calcium Carbonate Matrix) — sedimentary

Fossil Shell in Sedimentary Matrix

Bivalvia (fossil) in Calcium Carbonate Matrix

Vesicular Limestone with Borings (Fossiliferous Calcarenite (Calcium Carbonate, CaCO3)) — sedimentary

Vesicular Limestone with Borings

Fossiliferous Calcarenite (Calcium Carbonate, CaCO3)

Pearl (Pearl; chiefly aragonite (CaCO₃) with conchiolin) — gemstone

Pearl

Pearl; chiefly aragonite (CaCO₃) with conchiolin