Limestone
Calcium Carbonate (CaCO3)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Limestone
Calcium Carbonate (CaCO3)
Sandstone with Iron Staining
Arenite with Limonite/Hematite inclusions (SiO2 + Fe2O3/FeO(OH))
Limestone
Calcium Carbonate (CaCO3)
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
Sandstone
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Gray Limestone Pebble
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Greywacke/Lithic Sandstone)
Arenite (composed primarily of SiO2)
Limonitic Sandstone (Stained Sandstone)
Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining
Sandstone (Ferruginous)
Arenite (Fe2O3 staining)
Limestone with Fossil Inclusion
Calcium Carbonate (CaCO3)
Sandstone
Sandstone (clastic sedimentary rock), primarily SiO2
Sandstone
Clastic Sedimentary Rock (primarily SiO2)
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (Sedimentary rock comprising sand-sized grains)
Sandstone (Quartzose)
Arenite (Siliciclastic sedimentary rock)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 principal component)
Septarian Nodule
Septarian Concretion (CaCO3 with Calcite and Aragonite)
Banded chert or flint pebble
Microcrystalline quartz (SiO₂), likely chert with a pale weathered/altered zone
Fossiliferous Shale
Fossiliferous Mudstone / Shale
Limestone (with crushed gravel)
Limestone (Calcium Carbonate, CaCO3)
Limestone Pebble
Limestone (CaCO3)
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone with Calcite Veins
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)