Sandstone
Sedimentary Clastic Rock (Quartz arenite)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Sandstone
Sedimentary Clastic Rock (Quartz arenite)
Sandstone
Arenite (SiO2 based sedimentary rock)
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Sandstone (clastic sedimentary rock)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone (with Iron-Oxide staining)
Sedimentary Calcium Carbonate (CaCO3)
Limestone with Lichen/Moss
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Polished flint/chert pebble
Microcrystalline quartz (SiO₂), commonly called chert or flint
Ironstone Concretion (Iron-rich Mudstone)
Siderite / Geothite concretion (FeCO3 / FeO(OH))
Limonite (Ochreous Sandstone)
Hydrous ferric oxides (FeO(OH)qnH2O)
Weathered iron-rich concretion (probable limonite/goethite)
Limonite–goethite aggregate, approximately FeO(OH)·nH₂O
Limestone
Calcium Carbonate (CaCO3) / Limestone
Limestone ( weathered ) / Chert Nodular Rock
Sedimentary rock (primarily Calcium Carbonate, CaCO3, with Microcrystalline Quartz, SiO2)
Limestone (Chalk / Calcite Rock)
Calcium Carbonate (CaCO3)
Sandstone Cobble with Iron Staining
Arenite with Limonite/Hematite staining
Eroded Limestone with Iron Staining
Carbonate Rock (CaCO3)
Red Sandstone
Arenite (with Iron Oxide)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (Quartzose)
Arenite (SiO2 principal composition)
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)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Limestone (Calcium Carbonate - CaCO3)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone
Arenite (primarily SiO2)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Sandstone
Arenite (composed primarily of SiO2)
Crushed Limestone (Gravel)
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartz Arenite)
Sandstone (Chemical formula: primarily SiO2)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)
Limestone
Limestone (CaCO3)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Sandstone (Water-worn Pebble)
Clastic sedimentary rock (primarily SiO2)
Limestone
Sedimentary rock composed primarily of Calcium Carbonate (CaCO3)
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)