Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily Quartz)
Category
Browse sedimentary specimens identified by the Rock Identifier community.
Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily Quartz)
Limestone
Sedimentary Limestone (Calcium Carbonate, CaCO3)
Sandstone (Quartz Arenite)
Clastic Sedimentary Rock - Quartz Arenite
Fossiliferous Limestone
Autochthonous Biogenic Sedimentary Rock (CaCO3)
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Graywacke type)
Clastic Sedimentary Rock (Lithic Sandstone)
Sandstone (specifically Arkose or Siltstone variant)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Ferruginous Concretion)
Arenite (with iron oxide cement)
Sandstone (with Iron Staining)
Clastic sedimentary rock (High Silica / Iron Oxide)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone (Micaceous)
Clastic Sedimentary Rock (primarily SiO2 with Mica)
Sandstone (Quartzose)
Clastic sedimentary rock (primarily SiO2)
Hagstone (Adder Stone)
Chert or Sedimentary pebble with natural perforation
River Pebbles (Chert and Quartzite)
Sedimentary Clastic Rock (Silica-rich)
Quartz Breccia with Iron Staining
Tectonic or Sedimentary Breccia (SiO2 with Fe2O3)
Chert Conglomerate (Potomac Puddle Stone)
Sedimentary Conglomerate with Iron-Oxide matrix
River Cobble (Quartzite or Sandstone)
Clastic sedimentary rock (primarily SiO2)
Ferruginous Sandstone Pebble
Iron-rich Clastic Sedimentary Rock
Glacial Erratic (Graywacke/Sandstone)
Clastic Sedimentary Rock (Lithic Sandstone)
Sandstone concretion
Arenite sedimentary rock (concretion/nodule)
Quartz Geode
Silicon Dioxide (SiO2) in a Sedimentary Vug
Gray River Pebble (likely Limestone or Siltstone)
Sedimentary Rock (Calcium Carbonate or Siliciclastic)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
Banded Iron Formation (BIF) / Ironstone
Ferruginous sedimentary rock (Fe2O3 + SiO2)
Sandstone (Quartz-rich)
Clastic sedimentary rock (SiO2 primary)
Sandstone with Manganese Oxide Patina
Clastic Sedimentary Rock (primarily SiO2)
Conglomerate
Clastic sedimentary rock (Polymictic Conglomerate)
Conglomerate
Conglomerate (clastic sedimentary rock type)
Sandstone (Cross-bedded Drill Core)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Weathered Cobble)
Clastic sedimentary rock (primarily SiO2)
Travertine (often colloquially called Tufa)
Chemical Sedimentary Calcium Carbonate (CaCO3)
Fossiliferous Sandstone (with Brachiopod or Bivalve mold)
Clastic Sedimentary Rock with Macrofossil Mold
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Fossiliferous Siltstone
Clastic Sedimentary Rock with Fossil Inclusions
Concretion
Sedimentary Concretion (e.g., Siderite or Ironstone)
Ferruginous Conglomerate
Ferruginous Conglomerate (Clastic Sedimentary Rock)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Conglomerate (River Rock)
Clastic sedimentary rock (primarily SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)