Sandstone
Arenite (primarily SiO2)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcite (CaCO3)
Limestone (Weathered)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Chert
Chert (Microcrystalline Silica, SiO2)
Limestone
Calcium Carbonate (CaCO3)
Ferruginous Sandstone (Red Sandstone)
Arenite with Hematite/Limonite cement
Limestone
Calcium carbonate (CaCO3)
Limonite (Ironstone Concretion)
Hydrous ferric oxides (FeO(OH)·nH2O)
Fossil Shell
Phylum Mollusca (Bivalvia or Brachiopoda)
Iron-stained quartz (likely quartzite or quartz-rich rock)
Quartz, silicon dioxide (SiO₂), with iron-oxide staining
Granite Pebble
Intrusive Igneous Rock
Siltstone Pebble
Siltstone
Travertine (or Calcareous Tufa)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 predominantly)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
Sandstone
Arenite (SiO2 based)
Chert / Chalcedony Nodule
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) in Geode form
Pyrite (on Shale/Matrix)
Iron Disulfide (FeS2)
Seashell Fossil
Invertebrate Bivalve / Gastropod Fossil (Calcium Carbonate, CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Jasper
Silicon Dioxide (SiO2)
Banded sandstone pebble
Quartz-rich lithic sandstone; exact provenance and composition require testing
Ferruginous Sandstone
Arenite with Hematite/Limonite cement
Fossilized Gastropod Shell
Gastropoda (Class)
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Sandstone
Arenite
Sandstone (Lithic Arenite)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
Sandstone Pebble
Arenite (primarily SiO2)
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
River Stone (Limestone)
Sedimentary Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone Cobble
Sedimentary Calcium Carbonate (CaCO3)