Limestone
Calcium Carbonate (CaCO3)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Limestone
Calcium Carbonate (CaCO3)
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (Siliclastic sedimentary rock)
Sandstone
Arenite (primarily SiO2)
River Pebble (Quartzite)
Quartzite (SiO2)
Sandstone (Pebble)
Arenite (composed primarily of SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Fossilized Bone Fragment
Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)
Fossilized tooth, likely a mammalian tooth fragment
Indeterminate fossil tooth; possibly an ungulate or carnivoran tooth
Zoisite with Hornblende
Zoisite (Ca2Al3(SiO4)3(OH)) with Amphibole inclusions
Shale
Shale (Consolidated fine-grained clay/silt)
Fragmented Sedimentary Pebble
Clastic Sedimentary Specimen
Sandstone (Ferruginous)
Arenite (with iron oxide cement)
Limestone
Sedimentary Rock (Primarily CaCO3)
Sandstone (River Rock)
Arenite (SiO2 based sedimentary rock)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 primarily)
Sandstone (Calcareous or Quartz-rich)
Arenite
Sandstone (Ferruginous)
Sandstone (SiO2 with FeO(OH) cementing)
Sandstone (Quartz Sandstone)
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 based)
Sandstone (with Iron Staining)
Arenite
Sandstone
Arenite (SiO2 principal)
Sandstone
Arenite (SiO2 based)
Limestone
Limestone (Calcium Carbonate: CaCO3)
Limestone Pebble
Limestone (Calcium Carbonate, CaCO3)
Ferruginous Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 cement)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Limonite/Goethite staining)
Limestone (Weathered)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Likely quartz fragment
Quartz (silicon dioxide, SiO₂), possibly milky quartz or quartz-rich rock
Quartz
Silicon Dioxide (SiO2)
Quartz-rich sandstone or quartzite fragment
Likely quartz arenite; possibly weakly metamorphosed quartzite (mostly SiO₂)