Limestone
Calcium Carbonate (CaCO3)
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Limestone
Calcium Carbonate (CaCO3)
Limestone (specifically Iron-stained or Argillaceous Limestone)
Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone (River Pebble)
Arenite
Sandstone Pebble
Arenite (primarily SiO2)
Sandstone
Arenite (often composed of Quartz, SiO2)
Sandstone
Clastic Sedimentary Rock (composed mostly of SiO2)
Sandstone (Gneissic or Banded)
Clastic Sedimentary Rock (composed predominantly of SiO2)
Flagstone (Sandstone)
Clastic Sedimentary Rock (composed of quartz and feldspar)
Carnelian (Red Agate/Chalcedony)
Cryptocrystalline Quartz (SiO2) with Hematite impurities
Sandstone
Arenite (primarily SiO2)
Sandstone (Pebble/Conglomerate fragment)
Sandstone (clastic sedimentary rock)
Limestone with Calcite Veining
Calcium Carbonate (CaCO3)
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
Sandstone (likely Quartzose)
Arenite (SiO2 principal mineral)
Sandstone (Weathered Pebble)
Arenite (SiO2 primarily)
Sandstone (Pebble)
Clastic sedimentary rock (SiO2 primary)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (likely Arkose)
Arenite (composed mainly of SiO2 with Feldspar)
Crushed Limestone Aggregate
Limestone (Calcium Carbonate, CaCO3)
Sandstone (likely Arkosic or Quartzose)
Sandstone (SiO2 with inclusions)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
Limestone
Calcium Carbonate (CaCO3)
Sandstone Pebble
Arenite (primarily Quartz, SiO2)
Crushed Limestone
Calcite-rich Sedimentary Rock (CaCO3)
Sandstone (with potential Quartzite characteristics)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxides
Sandstone (with prominent jointing/fractures)
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 dominant)
Sandstone (Ferruginous)
Arenite (with iron oxide cement)
Chalcedony (variations like Agate or Jasper)
Chalcedony (SiO₂ - microcrystalline quartz)
Sandstone with Quarzite clasts
Arenite (SiO2 based)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Diorite (Dalmatian Stone)
Phaneritic Plutonic Diorite
Chert (specifically Red Chert/Jasper)
Microcrystalline Quartz (SiO2)
Red Sandstone (Arkose)
Clastic Sedimentary Rock (Lithic Arkose)
Red Sandstone
Arenite (primarily composed of SiO2 with Fe2O3 cement)