Sandstone
Arenite
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Sandstone
Arenite
Limestone (specifically Fossiliferous Limestone)
Calcium Carbonate (CaCO3)
Sandstone (with Siltstone/Greywacke variations)
Sedimentary Rock (Clastic)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone
Sandstone (clastic sedimentary rock)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 based with quartz, feldspar, or lithic fragments)
Sandstone with Iron Oxide (Limonite/Hematite)
Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
Sandstone
Arenite (SiO2 based)
Vesicular Basalt
Vesicular Basalt (rich in silicate minerals mostly Plagioclase and Pyroxene)
Bort or Carbonado
C - Polycrystalline Diamond
Banded limestone or marble
Calcite-dominated carbonate rock; likely banded marble (CaCO₃)
Granite
Phaneritic intrusive igneous rock (approx. 70 percent SiO2)
Vesicular Basalt with Quartz/Chalcedony
Vesicular Basalt (primarily Plagioclase, Pyroxene, and Olivine with SiO2 infill)
Limestone
CaCO3 (Calcium Carbonate)
Limestone with Fossil Inclusion
Calcium Carbonate (CaCO3) - Bioclastic Limestone
Crushed Limestone
Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Lithic Arenite)
Clastic Sedimentary Rock (primarily SiO2)
Crushed Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Weathered Sandstone with Algae Growth
Arenite
Sandstone
Arenite (SiO2 based with various cements)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcite (CaCO3)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
Limestone (Buff/Tan)
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Crushed Limestone
Calcium Carbonate (CaCO3)
Limestone Cobble
Sedimentary Calcium Carbonate (CaCO3)
Limestone (Weathered)
Sedimentary Carbonate Rock (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Granite boulder
Granite, composed mainly of quartz, alkali feldspar, plagioclase, and minor mica/amphibole
Fossiliferous limestone
Calcarenite/bioclastic limestone, predominantly calcite (CaCO₃)