Sandstone
Arenite
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Sandstone
Arenite
Limestone
Calcium Carbonate (CaCO3)
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Sandstone (Quartzite-rich)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
Chert (Beach Pebble)
Microcrystalline Quartz (SiO2)
Sandstone (Red Arkose)
Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)
Caribbean Calcite
Calcium Carbonate with Argonite (CaCO3)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
Limestone (Grey and White specimens)
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limonite (Ironstone Concretion)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone (lithic wacke/arenite)
Clastic sedimentary rock (primarily SiO2)
Limestone (specifically a Crushed Aggregate fragment)
Calcium Carbonate (CaCO3)
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 based)
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite (composed mainly of SiO2)
Fossilized Fish Skeleton in Matrix
Vertebrata (Class: Actinopterygii), typically found in limestone or shale matrices
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Limestone
CaCO3 (Mainly Calcite or Aragonite)
Limestone (Micrite/Chalky variety)
Calcium Carbonate (CaCO3)
Jasper
Silicon dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Geode (Unopened)
Silica-rich concretion (SiO2)
Jasper and Ironstone (likely Jasperized Ironstone)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
Stromatolite
Biogenic Sedimentary Rock (Lithified microbial mat)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Limonite/Goethite staining)
Chalk (Sedimentary Pebble)
Calcium Carbonate (CaCO3) - Biogenic Limestone
Jasper (Sedimentary variety)
Silicon Dioxide (SiO2) with impurities
Sandstone (likely Greywacke variant)
Arenite
Sandstone
Arenite
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Red Jasper (Quartz)
Silicon Dioxide (SiO2) with Iron impurities
Pyrite
Iron Sulfide (FeS2)
Sandstone
Clastic sedimentary rock (primarily SiO2)