Limestone
Calcium Carbonate (CaCO3)
Category
Browse sedimentary (synthetic) specimens identified by the Rock Identifier community.
Limestone
Calcium Carbonate (CaCO3)
Green Chert (Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite
Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Chert (specifically Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with iron oxide cement)
Quartzite in Conglomerate
Clastic Sedimentary Rock with Silicon Dioxide (SiO2) inclusions
Sandstone with Quartz Veining
Arenite with SiO2 veins
Limestone (River Stone)
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite with Iron Oxide staining (Fe2O3)
Sandstone (Quartzose)
Arenite (Formula: SiO2 primary, with various cements)
Sandstone
Arenite (primarily SiO2)
Chert / Jasper
Microcrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxides
Sandstone (River Rock)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone with Calcite Vein
Clastic sedimentary rock (primarily SiO2) with Calcium Carbonate (CaCO3) infilling
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Flagstone)
Arenite (composed primarily of SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (composed primarily of Quartz: SiO2)
Gravel or Pebble
Clastic Sedimentary Grain (typically composed of Quartz or Silicate minerals)
Sandstone (with Liesegang rings or joints)
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)
Geode with Iron-Stained Quartz/Calcite
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix
Manganese-coated Sandstone
Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)
Ironstone Pebble
Ferruginous sedimentary rock (Fe2O3 / FeO(OH) mixed with SiO2)
Chert (with Quartz Vein)
Chert (Siliceous sedimentary rock, predominantly Microcrystalline Quartz SiO2)
Mookaite Jasper
Radiolarite (Silica-rich sedimentary rock featuring Hematite and Goethite)
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2 with various lithic fragments)
Red Sandstone
Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)
Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)
Sandstone (Banded Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)
Halite
Halite (Sodium Chloride, NaCl)
Sandstone (Calcareous or Ferruginous)
Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Siltstone
Siltstone (primarily SiO2 with Al2O3 and Fe2O3)
Sandstone (with Iron Staining)
Arenite (composed primarily of SiO2 with Fe2O3 staining)