Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Limestone (Buff/Tan)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Mixed Gemstone Beaded Jewelry
Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)
Obsidian
Obsidian (volcanic glass, amorphous silica rich rock)
Caliche (also known as hardpan, calcrete, kankar)
Primarily composed of calcium carbonate (CaCO₃), often mixed with other minerals like quartz, clay minerals, and iron oxides.
Sandstone
Arenite (primarily SiO2)
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Greywacke/Lithic Sandstone)
Arenite (composed primarily of SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Sandstone
Sandstone (clastic sedimentary rock), primarily SiO2
Sandstone
Clastic Sedimentary Rock (primarily SiO2)
Limonitic Sandstone (Stained Sandstone)
Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining
Sandstone (Ferruginous)
Arenite (Fe2O3 staining)
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (Sedimentary rock comprising sand-sized grains)
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 principal component)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzose)
Arenite (Siliciclastic sedimentary rock)
Sandstone (Quartz-rich)
Clastic sedimentary rock (SiO2 primary)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Limestone
Limestone (Calcium Carbonate - CaCO3)
Sandstone (Banded)
Clastic Sedimentary Rock: Arenite
Sandstone (lithic/greywacke variety)
Arenite (composed primarily of SiO2 with various lithic fragments)
Sandstone (Painted)
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Crushed Limestone (Gravel)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)