Limestone
Calcium Carbonate (CaCO3)
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Red Sandstone
Quartz Arenite (iron-stained)
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone / Weathered Quartzite
Sandstone (Quartz Arenite)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone
Arenite
Ironstone Pebble
Sedimentary Ironstone (Hematite/Limonite-bearing)
Coquina / Shelly Sandstone
Calcareous Sandstone / Coquina
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Fossiliferous Sandstone (with Quartz patch)
Sedimentary Sandstone with Silicified Shell Fragments
Moqui Marble (Concretion)
Iron Oxide Concretion (Hematite-cemented Sandstone)
Sandstone (with ripple marks)
Arenite / Quartz Sandstone
Jasper
SiO2
Limestone
Calcium Carbonate (CaCO3)
Sandstone (likely Fossiliferous)
Arenite / Sedimentum arenaceum
Sandstone (Pebble)
Sandstone
Sandstone (with Iron Oxide)
Quartz Arenite / Ferruginous Sandstone (SiO2 with Fe2O3)
Sandstone and Conglomerate pebbles
Sedimentary clastic rock
Limestone
Calcium Carbonate (CaCO3)
Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
Limestone (Grey and White specimens)
Calcium Carbonate (CaCO3)
Banded sandstone pebble
Lithic or quartz-rich sandstone; exact composition requires testing
Sandstone
Arenite (Sedimentary rock)
Quartz Crystal Cluster / Quartzite
Silicon Dioxide (SiO2)
Bivalve Seashell Fossil
Class Bivalvia
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily Quartz and Feldspar)
Sandstone (Quartzite-rich)
Clastic sedimentary rock (primarily SiO2)
Quartz Geode in Sedimentary Host Rock
Silicon Dioxide (SiO2) in Carbonate Matrix
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Sandstone or Limestone
Arenite or Calcareous Sedimentary Rock
Sandstone
Arenite (Clastic Sedimentary Rock)
Quartz
Silicon Dioxide (SiO2)
Red Jasper and Hematite
Silicon Dioxide (SiO2) and Iron Oxide (Fe2O3)
Brown Jasper (Tumbled)
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper or Ironstone concretion
SiO2 or Fe2O3
Aragonite Star Cluster (Cross-section)
Aragonite (Calcium Carbonate, CaCO3)
Blue Calcite
Calcium Carbonate (CaCO3)