Rock Identifier

Category

Limestone

Browse limestone specimens identified by the Rock Identifier community.

Learn about Limestone in the encyclopedia

Limestone

Lithographic Limestone

Oolitic Limestone

Oolitic Limestone

Fossiliferous Limestone

Fossiliferous Limestone

Chalky Limestone

Crinoidal Limestone

Crinoidal Limestone

Shelly Limestone

Shelly Limestone

Micrite

Calcirudite

Coral Rock

Coquina

Chalk

Fossil Shell (Bivalve) (Phylum Mollusca, Class Bivalvia (typically composed of Calcium Carbonate / CaCO3)) — sedimentary

Fossil Shell (Bivalve)

Phylum Mollusca, Class Bivalvia (typically composed of Calcium Carbonate / CaCO3)

Chert Nodules or Concretion (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert Nodules or Concretion

Cryptocrystalline Quartz (SiO2)

Chert (v. Flint) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (v. Flint)

Chert (Microcrystalline Quartz, SiO2)

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

Chert (often colloquially called Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Weathered fossiliferous limestone fragment, possibly fossil coral or shell material (Indeterminate carbonate fossil in calcitic limestone; likely composed mainly of calcite (CaCO₃), but species identification is not possible from this image alone) — fossil

Weathered fossiliferous limestone fragment, possibly fossil coral or shell material

Indeterminate carbonate fossil in calcitic limestone; likely composed mainly of calcite (CaCO₃), but species identification is not possible from this image alone

Marble (Metamorphic Limestone (Calcite, CaCO3)) — metamorphic

Marble

Metamorphic Limestone (Calcite, CaCO3)

Zebra Marble (Metamorphosed Limestone (Recrystallized Calcite)) — metamorphic

Zebra Marble

Metamorphosed Limestone (Recrystallized Calcite)

Limestone (Riprap) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Riprap)

Calcium Carbonate (CaCO3)

Limestone (Ocherous) (Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)) — sedimentary

Limestone (Ocherous)

Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)

Limestone (Weathered) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Weathered)

Calcium Carbonate (CaCO3)

Weathered limestone (Limestone, predominantly calcite (CaCO₃)) — sedimentary

Weathered limestone

Limestone, predominantly calcite (CaCO₃)

Pale limestone (Limestone, predominantly calcite (CaCO₃)) — sedimentary

Pale limestone

Limestone, predominantly calcite (CaCO₃)

Fossiliferous Limestone (Biomicrite / Fossiliferous Limestone (CaCO3)) — fossil

Fossiliferous Limestone

Biomicrite / Fossiliferous Limestone (CaCO3)

Fossiliferous Limestone (Calcareous biomicrite / Bioclastic limestone) — sedimentary

Fossiliferous Limestone

Calcareous biomicrite / Bioclastic limestone

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

Fossiliferous Limestone

Limestone with fossil inclusions (CaCO3)

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

Fossiliferous Limestone

Limestone (Calcium Carbonate, CaCO3)

Limestone Pebble (Sedimentary carbonate rock (CaCO3)) — sedimentary

Limestone Pebble

Sedimentary carbonate rock (CaCO3)

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

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

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

Fossiliferous Limestone

Biogenic Sedimentary Rock (primarily CaCO3)

Fossiliferous limestone (Calcitic limestone, primarily CaCO₃ (calcite), with visible fossil fragments) — sedimentary

Fossiliferous limestone

Calcitic limestone, primarily CaCO₃ (calcite), with visible fossil fragments

Fossiliferous limestone (Bioclastic limestone, chiefly calcite (CaCO₃), with fossil shell fragments) — sedimentary

Fossiliferous limestone

Bioclastic limestone, chiefly calcite (CaCO₃), with fossil shell fragments

Kaibab Limestone (Calcitic limestone, predominantly calcium carbonate (CaCO₃)) — sedimentary

Kaibab Limestone

Calcitic limestone, predominantly calcium carbonate (CaCO₃)

Weathered limestone (Calcite-rich carbonate rock (mostly CaCO₃)) — sedimentary

Weathered limestone

Calcite-rich carbonate rock (mostly CaCO₃)

Fossiliferous limestone (Bioclastic limestone, likely containing fossil gastropods or other marine invertebrates; mainly calcite (CaCO₃)) — fossil

Fossiliferous limestone

Bioclastic limestone, likely containing fossil gastropods or other marine invertebrates; mainly calcite (CaCO₃)

Likely limestone (Calcite-rich carbonate rock; mainly calcium carbonate (CaCO₃)) — sedimentary

Likely limestone

Calcite-rich carbonate rock; mainly calcium carbonate (CaCO₃)

Weathered limestone (Calcite-rich limestone (CaCO₃), possibly fossiliferous) — sedimentary

Weathered limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous

Fossiliferous limestone (Calcite-rich limestone (CaCO₃), containing possible fossil or peloidal inclusions) — sedimentary

Fossiliferous limestone

Calcite-rich limestone (CaCO₃), containing possible fossil or peloidal inclusions

Fossiliferous limestone (Bioclastic carbonate rock, primarily calcite (CaCO₃)) — sedimentary

Fossiliferous limestone

Bioclastic carbonate rock, primarily calcite (CaCO₃)

Fossiliferous limestone (Bioclastic carbonate rock, chiefly calcite (CaCO₃)) — sedimentary

Fossiliferous limestone

Bioclastic carbonate rock, chiefly calcite (CaCO₃)

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

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Fossiliferous Carbonate Rock (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Carbonate Rock (CaCO3)

Fossiliferous Limestone (Biogenic Sedimentary Rock / CaCO3 with fossil fragments) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock / CaCO3 with fossil fragments

Limestone pebble (Sedimentary rock, primarily calcium carbonate (CaCO3)) — sedimentary

Limestone pebble

Sedimentary rock, primarily calcium carbonate (CaCO3)

Limestone Boulder (Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Limestone Boulder

Sedimentary Rock (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Calcium carbonate matrix with macrofossils (CaCO3)) — fossil

Fossiliferous Limestone

Calcium carbonate matrix with macrofossils (CaCO3)

Fossiliferous Limestone (Calcium carbonate (CaCO3) matrix with fossil inclusions) — fossil

Fossiliferous Limestone

Calcium carbonate (CaCO3) matrix with fossil inclusions

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

Coquina Limestone

Coquina (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Sedimentary Limestone (CaCO3) containing Crinoid or Brachiopod remains) — fossil

Fossiliferous Limestone

Sedimentary Limestone (CaCO3) containing Crinoid or Brachiopod remains

Calcite on Limestone (Calcium Carbonate (CaCO3)) — mineral

Calcite on Limestone

Calcium Carbonate (CaCO3)

Limestone with Lichen (Carbonate Sedimentary Rock (primarily CaCO3)) — sedimentary

Limestone with Lichen

Carbonate Sedimentary Rock (primarily CaCO3)

Banded Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Banded Limestone

Calcareous sedimentary rock (CaCO3)

Fossiliferous Limestone (Calcite (CaCO3) matrix with biogenic fragments) — sedimentary

Fossiliferous Limestone

Calcite (CaCO3) matrix with biogenic fragments