River Stone (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock (Lithic Wacke / Siltstone)
Category
Browse sedimentary rock specimens identified by the Rock Identifier community.
River Stone (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock (Lithic Wacke / Siltstone)
Sandstone (Greywacke)
Clastic Sedimentary Rock (SiO2 with lithic fragments)
Red Sandstone (Hematitic)
Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)
Mudstone
Lutylite (group of fine-grained sedimentary rocks)
Sandstone
Arenite (Siliclastic sedimentary rock, primarily SiO2)
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
Sandstone (Quartzose Sandstone)
Clastic Terrigenous Sedimentary Rock (primarily SiO2)
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
Shale (possibly)
Shale (fine-grained clastic sedimentary rock)
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
Sandstone
Arenite (SiO2 based)
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
Hag Stone (Piddock bored rock)
Calcareous sedimentary rock featuring Pholadidae borings
Ironstone (Limonitic Shale)
Ferruginous Siltstone / Goethite-rich Sedimentary Rock
Sandstone (clastic)
Clastic Sedimentary Rock (primarily composed of SiO2)
Travertine
Terrestrial Sedimentary Rock (Calcium Carbonate, CaCO3)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Fe2O3 cement)
Shale or Mudstone (Based on appearance)
Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
Sandstone (likely Arkose)
Arenite (composed mainly of SiO2 with Feldspar)
Sandstone (Ferruginous/Red Sandstone)
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Ironstone (likely Limonite or Goethite)
Ferruginous sedimentary rock (FeO(OH)·nH2O)
Fossiliferous Limestone with Crinoid stems
Calcite-rich Biogenic Sedimentary Rock (CaCO3)
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
Shale
Shale (Consolidated fine-grained clay/silt)
Sandstone
Arenite (predominantly Quartz Sandstone)
Ferruginous Sandstone (with Iron Oxide staining)
Clastic Sedimentary Rock - Quartz Arenite/Wacke
Fossil Coral
Coral Limestone (a type of biogenic sedimentary rock)
Wood Jasper
Siliceous sedimentary rock (variety of Chert/Chalcedony)
Stromatolite
Biogenic Sedimentary Rock (Lithified microbial mat)
Chert (variations include Flint or Jasper)
Chert (chemical sedimentary rock), Quartz (SiO2)
Sandstone
Clastic Sedimentary Rock (composed mostly of SiO2)
Ironstone (likely Ferruginous Siltstone/Sandstone)
Ferruginous sedimentary rock (FeOx-rich clastic)
Ferruginous Sandstone with Quartz Inclusions
Clastic Sedimentary Rock (Iron-rich Sandstone)
Bituminous Coal
Organic-rich sedimentary rock (Complex hydrocarbons)
Fossiliferous Limestone
Calcite (CaCO3) Rich Bio-sedimentary Rock
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
Anthracite Coal
Anthracite (Carbon-rich metamorphic sedimentary rock)