Sandstone (likely Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Sandstone (likely Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Crushed Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone
Arenite (SiO2 composition primarily)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Honey calcite (orange calcite)
Calcite, calcium carbonate (CaCO₃)
Limestone (or Sandstone)
Calcium Carbonate (CaCO3) / Silica (SiO2)
Sandstone (with Iron Staining)
Arenite (Siliclastic sedimentary rock)
Limonitic Sandstone with Inclusion
Limonitic Quartz Sandstone (primarily SiO2 with FeO(OH)·nH2O)
Limestone
Calcium Carbonate (CaCO3)
Raw calcite specimen
Calcite, calcium carbonate (CaCO₃)
Quartz Geode Fragment
Crystalline Silicon Dioxide (SiO2)
Sandstone (likely Quartz Sandstone)
Arenite (SiO2 based)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Zoisite with Hornblende
Zoisite (Ca2Al3(SiO4)3(OH)) with Amphibole inclusions
Bivalve Fossil in Sedimentary Matrix
Fossiliferous Mudstone (Class: Bivalvia)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone (Painted)
Arenite (primarily SiO2)
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
Sandstone (with Iron Staining)
Arenite
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Coarse Sandstone
Arenite (SiO2 based)
Dendritic sandstone
Sandstone with Manganese Oxide dendrites
Hag Stone
Siltstone or Fine-grained Sandstone with boring (e.g., Lithophaga impact)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Red Jasper
Red Jasper (SiO2)
Quartz Geode with Calcite
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)
Quartz on Host Rock
Silicon Dioxide (SiO2)
Jasper with Iron Staining
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Polished red jasper (likely hematite-bearing jasper)
Jasper, microcrystalline quartz (SiO₂), colored chiefly by iron oxides such as hematite/goethite
Sandstone
Sandstone (clastic sedimentary rock composite)
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Jasper (likely Iron-stained)
Silicon Dioxide (SiO2) with iron oxide inclusions
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
Orange Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)