Limestone
Calcareous sedimentary rock (CaCO3)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Limestone
Calcareous sedimentary rock (CaCO3)
Ironstone Concretion / Limonite
Goethite and Limonite (FeO(OH)·nH2O)
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Limestone
Limestone (Calcium Carbonate - CaCO3)
Sandstone (lithic/greywacke variety)
Arenite (composed primarily of SiO2 with various lithic fragments)
Sandstone (Quartz-rich)
Clastic sedimentary rock (SiO2 primary)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Sandstone
Arenite (primarily SiO2)
Sandstone (Quartz Arenite)
Sandstone (Chemical formula: primarily SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Crushed Limestone (Gravel)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (composed primarily of SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Sandstone (specifically Lithic or Quartz Arenite)
Arenite (composed primarily of SiO2)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Sandstone (Water-worn Pebble)
Clastic sedimentary rock (primarily SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (specifically Flagstone)
Arenite (primarily composed of SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with FeO/Fe2O3)
Sandstone with Foliose Lichen
Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)
Sandstone
Sandstone (lithified arenite/wacke)
Chert (Jasper variation)
Silicon dioxide (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Sandstone
Arenite (Siliclastic Sedimentary Rock)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
Limestone (River Pebble)
Sedimentary Calcium Carbonate (CaCO3)
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)