Rock Identifier

Category

Limestone

Browse limestone specimens identified by the Rock Identifier community.

Learn about Limestone in the encyclopedia

Limestone

Limestone

Lithographic Limestone

Lithographic Limestone

Fossiliferous Limestone

Fossiliferous Limestone

Shelly Limestone

Shelly Limestone

Oolitic Limestone

Oolitic Limestone

Crinoidal Limestone

Crinoidal Limestone

Chalky Limestone

Chalky Limestone

Micrite

Micrite

Calcirudite

Calcirudite

Coral Rock

Coral Rock

Oolite

Oolite

Dolomite

Dolomite

Chert (Arrowhead variety) (Chert (SiO2)) — sedimentary

Chert (Arrowhead variety)

Chert (SiO2)

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

Chert (Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert nodules in Limestone (Microcrystalline Quartz (SiO2) in Calcium Carbonate (CaCO3) matrix) — sedimentary

Chert nodules in Limestone

Microcrystalline Quartz (SiO2) in Calcium Carbonate (CaCO3) matrix

Black Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Black Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Fossiliferous Limestone (Crinoidal) (Calcite-bearing bioclastic packstone (CaCO3)) — sedimentary

Fossiliferous Limestone (Crinoidal)

Calcite-bearing bioclastic packstone (CaCO3)

Brecciated Limestone or Marble Pebble (Breccia / Calcite (CaCO3)) — Sedimentary / Metamorphic

Brecciated Limestone or Marble Pebble

Breccia / Calcite (CaCO3)

Sedimentary / Metamorphic

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

Fossiliferous Limestone (Coral Rag)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Malachite (Copper carbonate hydroxide [Cu2CO3(OH)2]) — mineral

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

Nephrite Jade (Tremolite-Actinolite solid solution Ca2(Mg, Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg, Fe)5Si8O22(OH)2

Nephrite Jade (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Fossilized Chiton (Polyplacophora) (Polyplacophora (fossilized valves)) — mineralized fossil

Fossilized Chiton (Polyplacophora)

Polyplacophora (fossilized valves)

mineralized fossil

Chert (Nodule) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert

Cryptocrystalline Quartz (SiO2)

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert Nodule (Flint) (Cryptocrystalline quartz (SiO2)) — sedimentary

Chert Nodule (Flint)

Cryptocrystalline quartz (SiO2)

Chert (Chalky Flint Node) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Chert (Flint/Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint/Jasper)

Silicon Dioxide (SiO2)

Fossiliferous Limestone with Crinoid Stem Impression (Calcium Carbonate (CaCO3) matrix with Crinoidea fossil) — sedimentary

Fossiliferous Limestone with Crinoid Stem Impression

Calcium Carbonate (CaCO3) matrix with Crinoidea fossil

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

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

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

Amber Chert (Jasper)

Microcrystalline Quartz (SiO2)

Chert (Chalcedony/Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Chalcedony/Flint)

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Chert (SiO2)

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

Chert (Flint)

Chert (SiO2)

Lapis Lazuli (Sodalite-rich Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Sodalite-rich Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Barite (Desert Rose or Cockscomb variety) (Barium Sulfate (BaSO4)) — mineral

Barite (Desert Rose or Cockscomb variety)

Barium Sulfate (BaSO4)

Chert (Nodule fragment) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Nodule fragment)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Chert (SiO2)

Marble (Carrara Marble style) (Recrystallized Calcite (CaCO3)) — metamorphic

Marble (Carrara Marble style)

Recrystallized Calcite (CaCO3)

Fossilized Sea Urchin (Echinoid) (Echinoidea (Fossil specimen, often replaced by Calcite or Silica)) — sedimentary

Fossilized Sea Urchin (Echinoid)

Echinoidea (Fossil specimen, often replaced by Calcite or Silica)

Marble (Recrystallized Calcite (CaCO3) / Marble) — metamorphic

Marble

Recrystallized Calcite (CaCO3) / Marble