Red Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar with Iron Oxide cement)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Red Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar with Iron Oxide cement)
Moqui Marble (Ironstone Concretion)
Goethite/Hematite Concretion (Fe2O3 / FeO(OH))
Sandstone (likely Greywacke variant)
Arenite
Sandstone
Arenite (primarily SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Red Jasper
Jasper (SiO2) with Hematite (Fe2O3) inclusions
Granite (Alkali-feldspar Granite)
Felsic Plutonic Rock (Primary minerals: Quartz SiO2, Orthoclase KAlSi3O8, Plagioclase (Na,Ca)AlSi3O8)
Chert (Flint)
Silicon Dioxide (SiO2)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Banded Chert
Cryptocrystalline Quartz (SiO2)
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
Sandstone (Pebble)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 based)
Riverstone (Quartzite or Siltstone cobble)
Quartzite (primarily SiO2)
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
African Turquoise
African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)
Conglomerate
Clastic sedimentary rock (Polymictic Conglomerate)
Conglomerate
Conglomerate (clastic sedimentary rock type)
Fossiliferous Sandstone (with Brachiopod or Bivalve mold)
Clastic Sedimentary Rock with Macrofossil Mold
Ferruginous Conglomerate
Ferruginous Conglomerate (Clastic Sedimentary Rock)
Ferruginous Sandstone (Grit)
Clastic Sedimentary (Ironstone-rich Sandstone)
Dragon Stone
Argillaceous Sedimentary Rock (Ohko Stone)
Red Sandstone (Arkose)
Clastic Sedimentary Rock (Lithic Arkose)
Sandstone (Graywacke)
Clastic Sedimentary Rock (Lithic Sandstone)
Anthracite Coal
Anthracite (Carbon-rich Sedimentary Rock)
Sandstone with Quartz Veining
Clastic sedimentary rock (SiO2 dominated)
Sandstone Concretion
Sedimentary Concretion (SiO2 or CaCO3 cemented)
Coquina / Fossiliferous Limestone
Calcareous bioclastic sedimentary rock (CaCO3)
Pyrite in Shale
Iron Sulfide (FeS2) in Sedimentary Matrix
Quartz Geode Fragment
Silicon Dioxide (SiO2) in a Sedimentary Host
Limestone
Calcium Carbonate (CaCO3)
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
Sandstone
Arenite (primarily SiO2)
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
Travertine
Terrestrial Sedimentary Rock (Calcium Carbonate, CaCO3)
Yellow Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Zebra Jasper
Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
Fossiliferous Limestone
Limestone (CaCO3 - Calcium Carbonate)