Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Category
Limestone
Browse limestone specimens identified by the Rock Identifier community.
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
CaCO3 (Mainly Calcite or Aragonite)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartz (chalcedony variety) or Limestone with Quartz Veins
SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)
Mineral or Sedimentary Rock (with mineral inclusions)
Crinaudite / Fossilized Crinoid Stem
Crinoid (Echinodermata) in a Calcitic/Siliceous Matrix
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
CaCO3 (principally composed of Calcite)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone (Fossiliferous)
Calcium Carbonate (CaCO3) - Bioclastic Limestone
sedimentary
Limestone (Micrite/Chalky variety)
Calcium Carbonate (CaCO3)
sedimentary
Marble
Metamorphosed Limestone (main mineral: Calcite, CaCO3)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (Lazulite-rich Metamorphic Rock)
metamorphic
Coquina
Bioclastic Limestone
sedimentary
Coquina
Coquina Limestone
sedimentary
Coquina
Biogenic Limestone
sedimentary
Coquina
Bioclastic Limestone
sedimentary
Herkimer Diamond
Double-terminated Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Flint variety)
Microcrystalline Silica (SiO2)
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Fossiliferous Limestone
Fossiliferous Limestone
sedimentary
Coquina
Bioclastic Limestone
sedimentary
Coquina
Bioclastic Limestone
sedimentary
Coquina
Bioclastic Limestone
sedimentary
Coquina
Bioclastic Limestone
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcareous sedimentary rock (primarily CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary